新概念英語第四冊單詞Lesson 13 The search for oil

New words and expressions 生詞與短語
    mineral
    adj. 礦物的
    boring
    n. 鉆孔
    derrick
    n. 井架
    block and tackle
    滑輪組
    haul
    v. 拖，拉
    rotate
    v. 使轉(zhuǎn)動
    cutting bit
    鉆頭
    geologist
    n. 地質(zhì)學家
    coring
    取芯鉆頭
    cylinder
    n. 圓柱體
    strata
    n. 巖層[復(fù)]([單]stratum或strata [誤用])
    circulate
    v. 注入，環(huán)流
    gusher
    n. 噴油井