Nobody knows how they do it with such accuracy, or why eels spawn where they do.
没有人知道它们如何做到那么准确，或是鳗鱼为什么要在大海里产卵。
They tend to believe in themselves and in what they do.
他们倾向于相信自己和自己所做的事情。
This is perhaps why volunteers all around the world keep doing what they do.
这也许就是为什么世界各地的志愿者一直在做他们所做的事情。
They are talking about the chores they do.
他们在谈论所做的家务活。
Surely it doesn't matter where charities get their money from: what counts is what they do with it.
当然，慈善组织从哪里得到钱并不重要，重要的是他们用这些钱做什么。
They do a lively trade in souvenirs and gifts.
他们做纪念品和礼品生意，做得有声有色。
Praise them sincerely when they do something good.
当他们做了好事时，真诚地赞美他们。
They do these tasks without payment.
他们做这些工作没有报酬。
If they do, it will be significant for a few reasons.
如果他们这样做，这将有几个重要的原因。
I suggested they do some experiments or at least a survey.
我建议他们做一些实验，或至少做一项调查。
All these items in the knapsack are evocative, and what they do is suggesting a plot.
背包里的所有物品都能唤起人们的回忆，而它们所做的就是暗示一个情节。
After studying these products for several years, I wrote a book about how they do it.
经过对这些产品长达几年的研究，我写了一本关于它们是如何运作的书。
If the seeds land in a suitable habitat, they do well and reproduce.
如果种子落在了合适的栖息地，它们就会生长得很好并进行繁殖。
That does not mean teens need to use electronic devices as often as they do now.
这不是说青少年需要像他们现在这样频繁地使用电子设备。
When they go on tour, they do a vast number of concerts, singing in smoky places.
他们巡回演出时会举办很多音乐会，在烟雾缭绕的地方演唱。
"People just don't do things like that."—"On the contrary, they do them all the time."
“人们根本就不像那样做事。” —“然而，他们却一直在那么做。”
These expressions are often used interchangeably, but they do have different meanings.
这些表达法经常可以互换使用，但它们的确有不同的含义。
He has promised drastic disciplinary action if they do not mend their ways.
如果他们不改过自新的话，他已保证会严惩不贷。
They do not keep a tally of visitors to the palace, but it is very popular.
他们没有对来宫殿的游客作一个记录，不过这个地方非常受欢迎的。
They do a lot of business in lucrative overseas markets.
他们在利润丰厚的海外市场上生意很多。
Fasten the gates securely so that they do not blow open.
把大门闩好以免被风吹开。
They do a pretty good job of impersonating Laurel and Hardy.
他们扮演劳莱和哈代很成功。
If they do not, their membership could be delayed until 2008.
如果他们不这样做，他们的成员资格将被推迟到2008年。
Unlike many mammals they do not engage in human-like behaviour.
与许多哺乳动物不同的是，它们不会做出类似人类的行为。
The finite which admits of progress and sublime toil, they do not think about.
他们没有想到承认进步和高贵的辛劳这一有限之物。
When a predator approaches, they do their best to attract the attention of that predator.
当某个捕食者靠近时，它们会尽力吸引这个捕食者的注意。
It is a rare school that allows pupils to concentrate on those things they do well.
很少有学校能让低年级的学生集中精力做他们擅长的事情。
They do not understand how the VAT works.
他们并不理解增值税如何运行。
Too little light makes the eyes work harder, so they do get tired and strained.
光线不足会让用眼更费劲，双眼会感到疲劳和紧张。
Too little light makes the eyes work harder, so they do get tired and strained.
光线不足会让用眼更费劲，双眼会感到疲劳和紧张。
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