The geologist needs to know what rocks the drill has reached, so every so often a sample is obtained with a coring bit.
every so often 时而,有时候(时间状语)
- She's going to come back every so often. 她会偶尔回来一下。
- You're bound to mistime a tackle every so often. 你肯定会有错估进攻时机的时候。
- Occasionally, I enjoy reading a classic novel.
- We meet up for coffee from time to time.
| every so often 每隔一段时间;偶尔地(中性,指不频繁且不规律的发生) | We get together for dinner every so often, perhaps once a month. 我们每隔一段时间会一起吃晚饭,可能一个月一次。 |
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| sometimes 有时(最常用,中性,指在某些时候发生) | Sometimes I like to work from home to avoid the commute. 有时我喜欢在家工作以避免通勤。 |
| occasionally 偶尔地;间或(比 sometimes 频率更低,较正式) | He only drinks coffee occasionally, preferring tea most of the time. 他只是偶尔喝咖啡,大部分时间更喜欢喝茶。 |
| at times 有时;间或(强调在某一时刻或某些时候发生) | The work can be very stressful at times, but it is usually rewarding. 这项工作有时会压力很大,但通常是值得的。 |
| now and then 偶尔;时而(口语化,与 every so often 相似,指不规律地发生) | I still go back to visit my childhood neighborhood now and then. 我仍然偶尔回去看看我童年的街坊邻里。 |
| now and again 偶尔;时不时地(与 now and then 同义,常用于英式英语) | The old engine coughs and splutters now and again, but it still runs. 这台旧发动机时而会发出咳嗽声和噼啪声,但它仍然能运转。 |
| once in a while 偶尔;难得(强调不经常发生,频率较低) | We splurge on an expensive meal once in a while to celebrate special occasions. 我们偶尔会奢侈地吃一顿大餐来庆祝特殊的场合。 |
| from time to time 时常;偶尔(指持续一段时间,间歇性地发生) | She likes to reread her favorite classic novels from time to time. 她喜欢时不时地重读她最喜欢的经典小说。 |
It cuts a clean cylinder of rock, from which can be seen the strata the drill has been cutting through.
… from which the strata the drill has been cutting through can be seen. 正常语序
from which... (主语后置) 非限定性定语从句
- She showed me her photo album, from which I selected several pictures.从中我选了几张照片
- The book presents many theories, from which we can draw several conclusions.从中我们可以得出几个结论
Once we get down to the oil, it usually flows to the surface because great pressure, either from gas or water, is pushing it.
get down to... 下降到...;认真严肃地做某事
- It's time to get down to business.是时候认真开始工作了
- We need to get down to the fundamentals before we proceed. 我们需要认真研究基础知识
- Let us get down to fundamentals and agree that the young are after all human beings -- people just like their elders.
This pressure must be under control, and we control it by means of the mud which we circulate down the drill pipe.
be under control 在控制之中
- There's no need to flap—I've got everything under control. 不必担心—一切都已在我控制之中。
- We've got to get the economy under control or it will literally eat us up. 我们必须控制住经济,否则它真地就会把我们困住。
- He believes that from a military standpoint, the situation is under control. 他认为从军事角度来看,局势已得到控制。
| get sth. under control 控制住... | ...Do you think they’ll ever get that under control?他们会控制住那个吗? |
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| get out of control / hand 失控 |
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under + 名词 在...状态之中
- The car is under repair. 在修理之中
- The castle is under attack. 遭受攻击
- The subject is under discussion. 讨论之中
- The matter is under consideration. 考虑之中
- You are under arrest. 被捕了
- The patient is under observation. 观察之中
- The case is under investigation. 在调查之中
- The bridge is under construction. 建造之中
- The building is under renovation. 整修之中
We endeavour to avoid the old, romantic idea of a gusher, which wastes oil and gas.
endeavor / make every endeavor to do 竭尽全力做某事
- You must endeavor to improve your work. 你必须努力改进自己的工作。
- We made an earnest endeavor to persuade her. 我们郑重其事地努力说服她。
- This book has been an endeavor to find interesting questions. 本书就是寻找有趣问题的尝试。
| do / try one’s utmost to do 竭尽全力做某事 | |
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| go to great lengths to do 竭尽全力做某事 | The man went to great lengths to prove that the diamonds were real. |
| spare no effort to do 不遗余力地做某事 | I will spare no effort to learn English.我将不遗余力地学习英语 |
| go all out to do 全力以赴地做某事 | John’s really gone all out this time. |
romantic adj. impractical 不切实际的
- Like many New Yorkers, he had a romantic image of country life.
- She has a romantic idea of what it's like to be a struggling young artist.
- That plan sounds a bit romantic and unworkable.
- We need a pragmatic approach, not a romantic one.
定语从句充当原因状语 which wastes oil and gas
We want it to stay down the hole until we can lead it off in a controlled manner.
lead it off 引走;导出
- The pipe is designed to lead the water off from the tank.
- A channel was dug to lead the excess water off the field.