Once we get down to the oil, it usually flows to the surface because great pressure,
一旦到达油层,石油就会由于地下巨大的压力流到地面上来,
新概念英语第四册 Lesson 13 The search for oil

📚 句中词汇解析

从本句中提取的重要词汇

once [wʌns] 词频1
adv. 一次,一趟;一倍;曾经;一旦; conj. 一旦…就…;一经; n. 一次,一回;
💡 on=one一+ce次 → 一次
"Once in the bloodstream, the bacteria adhere to the surface of the red cells."
细菌一进入血液里,就附着在红细胞表面上。
近义:heretofore, occasionally, onetime, previously, sometimes, thereinbefore
usually ['juʒuəli] 词频1 词根: 使用
adv. 通常,经常,平常,惯常地;一直,向来;动不动,一般;素;
💡 usual通常的+ly副词后缀→通常地,惯常地
"The discovery of distillation is usually accredited to the Arabs of the 11th century."
通常认为,蒸馏法是阿拉伯人在11世纪发明的。
近义:invariably, mostly, normally, oft, often, oftentimes 反义:infrequently, occasionally, seldom, sometimes
surface ['sɝfɪs] 词频1 词根: fac
n. 表面;外观,外表;地面。水面; vi. 浮出水面;在表面工作;显露; vt. 使浮出水面;使成平面; adj. 表面的,外观的;外表上的,平地上的;肤浅的;
💡 sur超过,在上面+face脸面→表面
"Once in the bloodstream, the bacteria adhere to the surface of the red cells."
细菌一进入血液里,就附着在红细胞表面上。
近义:appear, arise, loom, materialize, outcrop, rise
because [bɪ'kɔz] 词频1 词根: be
conj. 因为;
💡 cause, cuse 表原因,目的;司法程序,诉讼
"He was arrested because of his political affiliation."
他因所属政党的关系而被捕。
近义:since, whereas, for, forasmuchas
pressure ['prɛʃɚ] 词频2 词根: press
n. 压(力);压力;气压(或血压)(的缩略形式);压(迫)感; vi. 施加压力;迫使;使(机舱等)增压;
💡 press挤压+ure名词后缀,表行为、状态 →压力
"He changed his mind under the pressure from others."
他在别人的逼迫之下改变了主意.
近义:press, stress, holding, seizing, catch, grasping

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