2-9. One authority on spiders made a census of the spiders in grass field in the south of England, and he estimated that there were more than 2,250,000 in one acre; that is something like 6,000,000 spiders of different kinds on a football pitch.
【譯文】
某蜘蛛權(quán)威對(duì)英國(guó)南部某塊草坪上的蜘蛛數(shù)目統(tǒng)計(jì)了一次。他估計(jì)每英畝草坪里有超過(guò)225萬(wàn)只蜘蛛，即相當(dāng)于一個(gè)足球場(chǎng)上約有6百萬(wàn)只種類各異的蜘蛛。
【單詞和短語(yǔ)】
authority：學(xué)術(shù)權(quán)威，專家，泰斗（someone who knows a lot about a subject and whose knowledge and opinions are greatly respected）。某方面的authority需用介詞on，
例如：
an authority on preventive medicine 預(yù)防醫(yī)學(xué)的權(quán)威
something like：接近，大約（close to but not exactly a large amount），
例如：
He is to sell the house for something like $150,000.
他將以大約15萬(wàn)美元的價(jià)錢出售這幢房子。
census：統(tǒng)計(jì)數(shù)量（a process of counting something）。
2-10. Spiders are busy for at least half the year in killing insects.
【譯文】
蜘蛛至少有半年在忙于吃蟲。
【講解】
half（形容詞）the year是half（名詞）of the year的省略形式。
2-11. It is impossible to make more than the wildest guess at how many they kill, but they are hungry creatures, not content with only three meals a day.
【譯文】
它們消滅了多少昆蟲，我們簡(jiǎn)直無(wú)法猜測(cè)，它們是吃不飽的動(dòng)物，不滿足于一日三餐。
【講解】
it是形式主語(yǔ)，真正的主語(yǔ)是to make more than the wildest guess at how many they kill。It is impossible to…是重點(diǎn)句型，需熟練掌握。not前省略了and they are。
【單詞和短語(yǔ)】
content：adj. 滿意，滿足（happy and satisfied）。
2-12. It has been estimated that the weight of all the insects destroyed by spiders in Britain in one year would be greater than the total weight of all the human beings in the country.
【譯文】
據(jù)估計(jì)，在英國(guó)一年里被蜘蛛消滅的昆蟲的總重量超過(guò)該國(guó)人口的總重量。
【講解】
it是形式主語(yǔ)，真正的主語(yǔ)是the weight of all the insects destroyed…in the country。It has been estimated that…是重點(diǎn)句型，需熟練掌握。
【譯文】
某蜘蛛權(quán)威對(duì)英國(guó)南部某塊草坪上的蜘蛛數(shù)目統(tǒng)計(jì)了一次。他估計(jì)每英畝草坪里有超過(guò)225萬(wàn)只蜘蛛，即相當(dāng)于一個(gè)足球場(chǎng)上約有6百萬(wàn)只種類各異的蜘蛛。
【單詞和短語(yǔ)】
authority：學(xué)術(shù)權(quán)威，專家，泰斗（someone who knows a lot about a subject and whose knowledge and opinions are greatly respected）。某方面的authority需用介詞on，
例如：
an authority on preventive medicine 預(yù)防醫(yī)學(xué)的權(quán)威
something like：接近，大約（close to but not exactly a large amount），
例如：
He is to sell the house for something like $150,000.
他將以大約15萬(wàn)美元的價(jià)錢出售這幢房子。
census：統(tǒng)計(jì)數(shù)量（a process of counting something）。
2-10. Spiders are busy for at least half the year in killing insects.
【譯文】
蜘蛛至少有半年在忙于吃蟲。
【講解】
half（形容詞）the year是half（名詞）of the year的省略形式。
2-11. It is impossible to make more than the wildest guess at how many they kill, but they are hungry creatures, not content with only three meals a day.
【譯文】
它們消滅了多少昆蟲，我們簡(jiǎn)直無(wú)法猜測(cè)，它們是吃不飽的動(dòng)物，不滿足于一日三餐。
【講解】
it是形式主語(yǔ)，真正的主語(yǔ)是to make more than the wildest guess at how many they kill。It is impossible to…是重點(diǎn)句型，需熟練掌握。not前省略了and they are。
【單詞和短語(yǔ)】
content：adj. 滿意，滿足（happy and satisfied）。
2-12. It has been estimated that the weight of all the insects destroyed by spiders in Britain in one year would be greater than the total weight of all the human beings in the country.
【譯文】
據(jù)估計(jì)，在英國(guó)一年里被蜘蛛消滅的昆蟲的總重量超過(guò)該國(guó)人口的總重量。
【講解】
it是形式主語(yǔ)，真正的主語(yǔ)是the weight of all the insects destroyed…in the country。It has been estimated that…是重點(diǎn)句型，需熟練掌握。