A: I’m taking part in a march against racism.
B: Great, I hope that it helps the various different nationalities in the country.
racism
n.1.種族歧視，種族偏見; 2.種族主義
A: Would you like to have a game of tennis?
B: I’d love to, but I don’t have a racket.
racket
n.1.喧嚷，吵鬧; 2.敲詐，勒索，詐騙; 3.（網(wǎng)球等的）球拍
A: You look radiant tonight.
B: Thanks for the compliment.
radiant
a.1.容光煥發(fā)的，喜形于色的; 2.光芒四射的，光輝燦爛的; 3.輻射的
A: Wow, the weather was hot today.
B: Yes, the sun radiated great heat.
radiate
v.1.發(fā)出（光或熱），輻射; 2.流露，顯示
A: I heard that radioactive waste was dumped into the sea.
B: I know, isn’t it shocking?
radioactive
a.放射性的，有輻射能的
A: I want to rent a house within two mile radius of my workplace.
B: That is a sensible decision.
radius
n.1.半徑，半徑范圍; 2.周圍，范圍
A: Did you buy a new computer?
B: No, I won it in a raffle.
raffle
n.對獎售物，抽彩
vt.(off)用對獎辦法出售
A: How did you travel down the river?
B: We built a raft and floated down it.
raft
n.1.木排，木筏; 2.充氣救生筏，救生圈
vt.用筏子運送
vi.乘筏子渡河
A: Did you climb to the top of the mountain?
B: No, the cliffs were too ragged and dangerous to climb.
ragged
a.1.（衣服）破舊的，襤褸的; 2.衣衫襤褸的; 3.不規(guī)則的，參差不齊的，凸凹不平的;
4.粗糙的，不完善的，差勁的
A: I want to do some gardening, did you see the rake?
B: Yes, it is in the garage.
rake
n.1.耙，草耙，釘齒耙; 2.斜度，傾角
vi.1.耙 ; 2.搜索，核查
vt.1.耙集，耙平，耙松; 2.掃射，掃過
rake in
大量斂集（錢財）
rake up
1.耙集，集攏，耙開，扒開; 2.翻出（舊事等）重提
A: I am constructing a ramp to avoid the steps up to my building.
B: Good, that will take it accessible to wheelchairs.
ramp
n.1.斜面，坡道; 2.活動舷梯，輕便梯
A: The rats are rampant on my farm.
B: Why don’t you get a cat to kill them?
rampant
a.1.（犯罪、疾病等）猖獗的，肆虐的; 2.（植物）蔓生的，過于繁茂的
A: How many horses do you have on your ranch?
B: Oh, I have both trained and wild horses, but I’m not sure how many.
ranch
n.1.大牧場; 2.飼養(yǎng)場
A: You were lucky to get into this university.
B: I was indeed lucky, I chose it at random.
random
a.任意的，隨機的
at random
隨便的，任意的
A: Do you enjoy being a park ranger?
B: Oh yes, I love the outdoors.
ranger
n.1.國家公園管理員，護林員; 2.騎兵巡邏隊員
A: My boss was kidnapped!
B: Was he held for ransom?
ransom
n.贖金
vt.贖出，贖回
hold sb to ransom
擄某人索贖，要挾某人
A: Can you make a song out of your poem?
B: No, but I could try to rap it.
rap
vt.1.（輕而快地）敲擊，急敲; 2.(out)突然厲聲說出; 3.責(zé)備，訓(xùn)斥
n.（輕快的）敲擊（聲），急敲（聲）
A: For what offence was the criminal convicted?
B: He was convicted for two counts of rape.
rape
vt./n.強*
A: I didn’t realize that you were going to move house.
B: I didn’t either until yesterday, it was a rash decision.
rash
a.輕率的，魯莽的
n.1.疹，皮疹; 2.（短時期內(nèi)）爆發(fā)的一連串
A: Has the government ratified the international treaty?
B: Not yet, they are still consulting with other nations about it.
ratify
vt.正式批準(zhǔn)，使正式生效，認可
A: My novel made it into the top ten books of the year.
B: Well done, that is an excellent rating.
rating
n.1.等級，品級，評定結(jié)果; 2.[pl.]（電視節(jié)目的）收視率，（廣播節(jié)目的）收聽率
A: Would you like another cup of coffee?
B: No thanks, I’ve had my ration for the day.
ration
n.1.配給量，定量; 2.[常pl.]給養(yǎng)，口糧
vt.配給供應(yīng)，定量供應(yīng)
A: The car rattles every time we drive over a bump.
B: Perhaps you should get it fixed.
rattle
vi.1.發(fā)格格聲，發(fā)連續(xù)短促的尖叫聲; 2.飛奔，咯嚓咯嚓地行進
vt.1.使碰撞作響，使發(fā)出連續(xù)短促的尖叫聲 ; 2.使窘迫不安，激怒，使恐懼驚慌
n.1.連續(xù)短促的尖叫聲，碰撞聲; 2.連續(xù)發(fā)聲的玩具，撥浪鼓
rattle off
飛快地說出
rattle on
1.飛奔; 2.喋喋不休地講話
A: Michael simply raved about this film.
B: I don’t know why, I think it is terrible.
rave
vi.1.胡言亂語，說胡話; 2.(about)極力贊美
a.贊揚（性）的
A: Why didn’t you shave today?
B: I ran out of razors.
razor
n.剃刀
A: You have a good crop of this year.
B: Yes, we reaped a good one alright.
reap
vt.1.收割，收獲
2.獲得，得到
A: Please don’t forget to give me back my book.
B: I reassure you again, I’ll have it back to you by the end of the week.
reassure
vt.向……再保證，使消除疑慮，使放心
A: Did you hear about the rebellion in the Congo?
B: No, what were the rebels fighting against?
rebellion
n.反叛，反抗
A: My father rebuked me for breaking window.
B: Well, he has every right to be upset.
rebuke
n.指責(zé)，訓(xùn)斥
A: Do you remember my tenth birthday?
B: I’m sorry, the occasion seems to have receded from my memory.
recede
vi.1.退，退去，漸漸遠去; 2.向后傾斜，縮進
A: The students at the lecture were very attentive.
B: Yes, they are always receptive to new ideas.
receptive
a.（對知識、思想等）接受能力強的，能迅速接受的
A: What time is your recess at?
B: We have lunch at 12:30 every day.
recess
n.1.（工作等）暫停，休息，休庭; 2.課間休息 ; 3.凹處，凹室，壁龕; 4.[常pl.]深處，幽深處，隱秘處
vi.暫停，休會，休庭
A: This cake is fantastic. Can I have the recipe?
B: I’m sorry, the ingredients are a secret
recipe
n.1.烹飪法，食譜
2.方法，秘訣，訣竅
A: Elaine was one of the top students in the university.
B: Yes, I heard that she was the recipient of the “Student of the Year” award.
recipient
n.接受者，接收者
A: Mr. Clancy highly respects you.
B: Well, we have reciprocal respect for each other, I think he is a wonderful man.
reciprocal
a.相互的，互惠的
A: Can you recite any poems form your memory?
B: I wish that I could, but I have a terrible memory.
recite
vt.1.背誦，朗誦; 2.列舉，一一說出
vi.背誦，朗誦
A: Tim is a reckless and dangerous driver.
B: I know, I keep telling him that he will have an accident one day.
reckless
a.魯莽的，草率的，不考慮后果的
A: Most of Holland is reclaimed from the sea.
B: Yes, that is why they are so worried about flooding.
reclaim
vt.1.改正，改造; 2.開墾（荒地），開拓; 3.回收;4.要求（或主張）收回，要求（或主張）恢復(fù)
A: Are you and Mary friends again?
B: Yes, we reconciled our differences.
reconcile
vt.1.使協(xié)調(diào); 2.使和解; 3.(to)使順從（于），使甘心（于）
A: Have they reached reconciliation yet?
B: No, they are still fighting over the terms of their relationship.
reconciliation
n.和解，調(diào)和
A: How many sides does a rectangle have?
B: Four, Sir.
rectangle
n.長方形，矩形
A: Car you describe you bedroom to me?
B: Well, it is rectangular in shape and is painted bright yellow.
rectangular
a.長方形的，矩形的
A: Dad, I’ve made a serious mistake.
B: Don’t worry, I’m sure we can rectify the situation.
rectify
vt.糾正，修復(fù)
A: Doctor, I have a recurring dream.
B: Do you mean that you have the same dream every night?
recur
vi.再發(fā)生，重現(xiàn)
A: Please don’t put the paper in the rubbish bin, I will recycle it.
B: Oh, of course, it is a good idea to use it again.
recycle
vt.回收利用（廢物等）
A: I sold you watch.
B: Oh no, I want it back, can it be redeemed?
redeem
vt.1.彌補，補償，抵消
2.解救，救贖
3.(oneself)使免咎，挽回聲譽
4.履行，遵守（諾言）
5.將（股票、債券等）兌取現(xiàn)金
6.贖回（抵押品）
A: I have some bad news, I was made redundant.
B: Oh no, why did you lose your job?
redundant
a.1.（因人員過剩而）被解雇的; 2.多余的，過剩的
A: We were fishing, but our boat got caught in some reeds.
B: How did you manage to get out of them?
reed
n.1.蘆葦，蘆叢
2.簧舌，簧片
A: I would love to go diving off the coast of Australia.
B: Me too, I have heard that the reefs are incredible.
reef
n.礁，暗礁
A: Did you catch any fish?
B: No, I had one, but it was so heavy it broke my reel.
reel
n.卷軸，卷筒，卷盤
vi.1.搖搖晃晃地移動，蹣跚; 2.眩暈，發(fā)昏
vt. (in,up)卷，繞
reel off
一口氣說，重復(fù)
A: That was a foul.
B: No, is wasn’t. Where is the referee? He’ll decide.
referee
n.1.裁判員; 2.證明人，推薦人 ; 3.仲裁者，調(diào)解者
v.當(dāng)裁判
A: Do you know all the words to the song?
B: Not all of them, only the refrain.
refrain
vt.(from)抑制，克制，戒除
n.（詩歌的）疊句，副歌
A: Will there be any refreshments at the party?
B: I am sure that there will at least be some drinks.
refreshment
n.1.[pl.]茶點，點心 ; 2.（精力的）恢復(fù)，精神爽快
A: Did you find a place to sleep for the night in the mountains?
B: Yes, we found refuge in a cave.
refuge
n.庇護所，避難處，庇護
A: My new coat does not fit me.
B: Will you be able to get a refund if you take it back to the shop?
refund
n.退款
vt.退還（錢款）
A: During the debate he refuted all of my arguments.
B: I hope that you also proved some of his arguments were wrong.
refute
vt.駁斥，駁倒
A: What’s their form of government?
B: It is a military regime.
regime
n.政治制度，政權(quán)
A: There is a new regiment of army troops in the city.
B: Oh, where are they based?
regiment
n.1.（軍隊的）團 ; 2.大量
vt.嚴(yán)格地管制，嚴(yán)密地編組
A: Mathew rehabilitated quickly following the accident.
B: Yes, he made a speedy recovery.
rehabilitate
vt.1.改造（罪犯等），使恢復(fù)正常生活; 2.使恢復(fù)原狀，修復(fù) ; 3.恢復(fù)……的名譽
A: Is this the opening night of your performance?
B: No, it is just the final rehearsal.
rehearsal
n.排練，排演
A: How long has the King reigned?
B: Perhaps he has been the king for too long!
reign
n.君主的統(tǒng)治，君主統(tǒng)治時期
vi.1.當(dāng)政，統(tǒng)治 ; 2.占主導(dǎo)地位
A: I lost control of the horse.
B: What happened? Did you let go of the reins?
rein
n.韁繩
vt.勒韁使（馬）停步
rein in
嚴(yán)格控制，嚴(yán)加管束
give (free) rein to
對……不加約束，放任，給……充分自由
A: My wife just gave birth to a baby boy.
B: Rejoice! That is great news.
rejoice
vi.感到高興，充滿喜悅
A: I dropped the baton during the relay race.
B: It’s OK, Your team members caught up quickly.
relay
n.1.接力賽 ; 2.中繼轉(zhuǎn)播（設(shè)備）
vt.1.傳送，傳達，轉(zhuǎn)述; 2.中繼轉(zhuǎn)播
A: Did you get promoted to a higher position in the army?
B: No, I was actually relegated to a lower rank.
relegate
vt.使降級，使降職
A: My efforts as a mother are relentless.
B: Yes, you never get a break.
relentless
a.殘酷的，不留情的，無憐憫心的
A: My car is always breaking down.
B: That make of car is not known for its reliance.
reliance
n.依靠，依賴
B: Great, I hope that it helps the various different nationalities in the country.
racism
n.1.種族歧視，種族偏見; 2.種族主義
A: Would you like to have a game of tennis?
B: I’d love to, but I don’t have a racket.
racket
n.1.喧嚷，吵鬧; 2.敲詐，勒索，詐騙; 3.（網(wǎng)球等的）球拍
A: You look radiant tonight.
B: Thanks for the compliment.
radiant
a.1.容光煥發(fā)的，喜形于色的; 2.光芒四射的，光輝燦爛的; 3.輻射的
A: Wow, the weather was hot today.
B: Yes, the sun radiated great heat.
radiate
v.1.發(fā)出（光或熱），輻射; 2.流露，顯示
A: I heard that radioactive waste was dumped into the sea.
B: I know, isn’t it shocking?
radioactive
a.放射性的，有輻射能的
A: I want to rent a house within two mile radius of my workplace.
B: That is a sensible decision.
radius
n.1.半徑，半徑范圍; 2.周圍，范圍
A: Did you buy a new computer?
B: No, I won it in a raffle.
raffle
n.對獎售物，抽彩
vt.(off)用對獎辦法出售
A: How did you travel down the river?
B: We built a raft and floated down it.
raft
n.1.木排，木筏; 2.充氣救生筏，救生圈
vt.用筏子運送
vi.乘筏子渡河
A: Did you climb to the top of the mountain?
B: No, the cliffs were too ragged and dangerous to climb.
ragged
a.1.（衣服）破舊的，襤褸的; 2.衣衫襤褸的; 3.不規(guī)則的，參差不齊的，凸凹不平的;
4.粗糙的，不完善的，差勁的
A: I want to do some gardening, did you see the rake?
B: Yes, it is in the garage.
rake
n.1.耙，草耙，釘齒耙; 2.斜度，傾角
vi.1.耙 ; 2.搜索，核查
vt.1.耙集，耙平，耙松; 2.掃射，掃過
rake in
大量斂集（錢財）
rake up
1.耙集，集攏，耙開，扒開; 2.翻出（舊事等）重提
A: I am constructing a ramp to avoid the steps up to my building.
B: Good, that will take it accessible to wheelchairs.
ramp
n.1.斜面，坡道; 2.活動舷梯，輕便梯
A: The rats are rampant on my farm.
B: Why don’t you get a cat to kill them?
rampant
a.1.（犯罪、疾病等）猖獗的，肆虐的; 2.（植物）蔓生的，過于繁茂的
A: How many horses do you have on your ranch?
B: Oh, I have both trained and wild horses, but I’m not sure how many.
ranch
n.1.大牧場; 2.飼養(yǎng)場
A: You were lucky to get into this university.
B: I was indeed lucky, I chose it at random.
random
a.任意的，隨機的
at random
隨便的，任意的
A: Do you enjoy being a park ranger?
B: Oh yes, I love the outdoors.
ranger
n.1.國家公園管理員，護林員; 2.騎兵巡邏隊員
A: My boss was kidnapped!
B: Was he held for ransom?
ransom
n.贖金
vt.贖出，贖回
hold sb to ransom
擄某人索贖，要挾某人
A: Can you make a song out of your poem?
B: No, but I could try to rap it.
rap
vt.1.（輕而快地）敲擊，急敲; 2.(out)突然厲聲說出; 3.責(zé)備，訓(xùn)斥
n.（輕快的）敲擊（聲），急敲（聲）
A: For what offence was the criminal convicted?
B: He was convicted for two counts of rape.
rape
vt./n.強*
A: I didn’t realize that you were going to move house.
B: I didn’t either until yesterday, it was a rash decision.
rash
a.輕率的，魯莽的
n.1.疹，皮疹; 2.（短時期內(nèi)）爆發(fā)的一連串
A: Has the government ratified the international treaty?
B: Not yet, they are still consulting with other nations about it.
ratify
vt.正式批準(zhǔn)，使正式生效，認可
A: My novel made it into the top ten books of the year.
B: Well done, that is an excellent rating.
rating
n.1.等級，品級，評定結(jié)果; 2.[pl.]（電視節(jié)目的）收視率，（廣播節(jié)目的）收聽率
A: Would you like another cup of coffee?
B: No thanks, I’ve had my ration for the day.
ration
n.1.配給量，定量; 2.[常pl.]給養(yǎng)，口糧
vt.配給供應(yīng)，定量供應(yīng)
A: The car rattles every time we drive over a bump.
B: Perhaps you should get it fixed.
rattle
vi.1.發(fā)格格聲，發(fā)連續(xù)短促的尖叫聲; 2.飛奔，咯嚓咯嚓地行進
vt.1.使碰撞作響，使發(fā)出連續(xù)短促的尖叫聲 ; 2.使窘迫不安，激怒，使恐懼驚慌
n.1.連續(xù)短促的尖叫聲，碰撞聲; 2.連續(xù)發(fā)聲的玩具，撥浪鼓
rattle off
飛快地說出
rattle on
1.飛奔; 2.喋喋不休地講話
A: Michael simply raved about this film.
B: I don’t know why, I think it is terrible.
rave
vi.1.胡言亂語，說胡話; 2.(about)極力贊美
a.贊揚（性）的
A: Why didn’t you shave today?
B: I ran out of razors.
razor
n.剃刀
A: You have a good crop of this year.
B: Yes, we reaped a good one alright.
reap
vt.1.收割，收獲
2.獲得，得到
A: Please don’t forget to give me back my book.
B: I reassure you again, I’ll have it back to you by the end of the week.
reassure
vt.向……再保證，使消除疑慮，使放心
A: Did you hear about the rebellion in the Congo?
B: No, what were the rebels fighting against?
rebellion
n.反叛，反抗
A: My father rebuked me for breaking window.
B: Well, he has every right to be upset.
rebuke
n.指責(zé)，訓(xùn)斥
A: Do you remember my tenth birthday?
B: I’m sorry, the occasion seems to have receded from my memory.
recede
vi.1.退，退去，漸漸遠去; 2.向后傾斜，縮進
A: The students at the lecture were very attentive.
B: Yes, they are always receptive to new ideas.
receptive
a.（對知識、思想等）接受能力強的，能迅速接受的
A: What time is your recess at?
B: We have lunch at 12:30 every day.
recess
n.1.（工作等）暫停，休息，休庭; 2.課間休息 ; 3.凹處，凹室，壁龕; 4.[常pl.]深處，幽深處，隱秘處
vi.暫停，休會，休庭
A: This cake is fantastic. Can I have the recipe?
B: I’m sorry, the ingredients are a secret
recipe
n.1.烹飪法，食譜
2.方法，秘訣，訣竅
A: Elaine was one of the top students in the university.
B: Yes, I heard that she was the recipient of the “Student of the Year” award.
recipient
n.接受者，接收者
A: Mr. Clancy highly respects you.
B: Well, we have reciprocal respect for each other, I think he is a wonderful man.
reciprocal
a.相互的，互惠的
A: Can you recite any poems form your memory?
B: I wish that I could, but I have a terrible memory.
recite
vt.1.背誦，朗誦; 2.列舉，一一說出
vi.背誦，朗誦
A: Tim is a reckless and dangerous driver.
B: I know, I keep telling him that he will have an accident one day.
reckless
a.魯莽的，草率的，不考慮后果的
A: Most of Holland is reclaimed from the sea.
B: Yes, that is why they are so worried about flooding.
reclaim
vt.1.改正，改造; 2.開墾（荒地），開拓; 3.回收;4.要求（或主張）收回，要求（或主張）恢復(fù)
A: Are you and Mary friends again?
B: Yes, we reconciled our differences.
reconcile
vt.1.使協(xié)調(diào); 2.使和解; 3.(to)使順從（于），使甘心（于）
A: Have they reached reconciliation yet?
B: No, they are still fighting over the terms of their relationship.
reconciliation
n.和解，調(diào)和
A: How many sides does a rectangle have?
B: Four, Sir.
rectangle
n.長方形，矩形
A: Car you describe you bedroom to me?
B: Well, it is rectangular in shape and is painted bright yellow.
rectangular
a.長方形的，矩形的
A: Dad, I’ve made a serious mistake.
B: Don’t worry, I’m sure we can rectify the situation.
rectify
vt.糾正，修復(fù)
A: Doctor, I have a recurring dream.
B: Do you mean that you have the same dream every night?
recur
vi.再發(fā)生，重現(xiàn)
A: Please don’t put the paper in the rubbish bin, I will recycle it.
B: Oh, of course, it is a good idea to use it again.
recycle
vt.回收利用（廢物等）
A: I sold you watch.
B: Oh no, I want it back, can it be redeemed?
redeem
vt.1.彌補，補償，抵消
2.解救，救贖
3.(oneself)使免咎，挽回聲譽
4.履行，遵守（諾言）
5.將（股票、債券等）兌取現(xiàn)金
6.贖回（抵押品）
A: I have some bad news, I was made redundant.
B: Oh no, why did you lose your job?
redundant
a.1.（因人員過剩而）被解雇的; 2.多余的，過剩的
A: We were fishing, but our boat got caught in some reeds.
B: How did you manage to get out of them?
reed
n.1.蘆葦，蘆叢
2.簧舌，簧片
A: I would love to go diving off the coast of Australia.
B: Me too, I have heard that the reefs are incredible.
reef
n.礁，暗礁
A: Did you catch any fish?
B: No, I had one, but it was so heavy it broke my reel.
reel
n.卷軸，卷筒，卷盤
vi.1.搖搖晃晃地移動，蹣跚; 2.眩暈，發(fā)昏
vt. (in,up)卷，繞
reel off
一口氣說，重復(fù)
A: That was a foul.
B: No, is wasn’t. Where is the referee? He’ll decide.
referee
n.1.裁判員; 2.證明人，推薦人 ; 3.仲裁者，調(diào)解者
v.當(dāng)裁判
A: Do you know all the words to the song?
B: Not all of them, only the refrain.
refrain
vt.(from)抑制，克制，戒除
n.（詩歌的）疊句，副歌
A: Will there be any refreshments at the party?
B: I am sure that there will at least be some drinks.
refreshment
n.1.[pl.]茶點，點心 ; 2.（精力的）恢復(fù)，精神爽快
A: Did you find a place to sleep for the night in the mountains?
B: Yes, we found refuge in a cave.
refuge
n.庇護所，避難處，庇護
A: My new coat does not fit me.
B: Will you be able to get a refund if you take it back to the shop?
refund
n.退款
vt.退還（錢款）
A: During the debate he refuted all of my arguments.
B: I hope that you also proved some of his arguments were wrong.
refute
vt.駁斥，駁倒
A: What’s their form of government?
B: It is a military regime.
regime
n.政治制度，政權(quán)
A: There is a new regiment of army troops in the city.
B: Oh, where are they based?
regiment
n.1.（軍隊的）團 ; 2.大量
vt.嚴(yán)格地管制，嚴(yán)密地編組
A: Mathew rehabilitated quickly following the accident.
B: Yes, he made a speedy recovery.
rehabilitate
vt.1.改造（罪犯等），使恢復(fù)正常生活; 2.使恢復(fù)原狀，修復(fù) ; 3.恢復(fù)……的名譽
A: Is this the opening night of your performance?
B: No, it is just the final rehearsal.
rehearsal
n.排練，排演
A: How long has the King reigned?
B: Perhaps he has been the king for too long!
reign
n.君主的統(tǒng)治，君主統(tǒng)治時期
vi.1.當(dāng)政，統(tǒng)治 ; 2.占主導(dǎo)地位
A: I lost control of the horse.
B: What happened? Did you let go of the reins?
rein
n.韁繩
vt.勒韁使（馬）停步
rein in
嚴(yán)格控制，嚴(yán)加管束
give (free) rein to
對……不加約束，放任，給……充分自由
A: My wife just gave birth to a baby boy.
B: Rejoice! That is great news.
rejoice
vi.感到高興，充滿喜悅
A: I dropped the baton during the relay race.
B: It’s OK, Your team members caught up quickly.
relay
n.1.接力賽 ; 2.中繼轉(zhuǎn)播（設(shè)備）
vt.1.傳送，傳達，轉(zhuǎn)述; 2.中繼轉(zhuǎn)播
A: Did you get promoted to a higher position in the army?
B: No, I was actually relegated to a lower rank.
relegate
vt.使降級，使降職
A: My efforts as a mother are relentless.
B: Yes, you never get a break.
relentless
a.殘酷的，不留情的，無憐憫心的
A: My car is always breaking down.
B: That make of car is not known for its reliance.
reliance
n.依靠，依賴