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1·We cannot undertake to do that.

我们不能担保做那件事。

2·Why do humanity's best choose to undertake difficult tasks, such as climbing mountains and crossing oceans?

为什么人类总是喜欢选择从事那些艰难的工作，例如攀爬高山或穿越海洋？

3·I do not deny that drug-manufacturing companies need to earn some profits.Otherwise, no one will undertake a non-profit business.

我不否认制药的单位需要一定的利润，谁也不会去做无利可图的生意。

4·And the cycle it's going to undertake is called a Carnot cycle, and it works the following way: we're going to do pressure volume work.

它的循环过程，叫做卡诺循环，过程如下：，这是个压强体积系统。

5·But do you think of to undertake replacing to punctuation mark?

但是你有没有想到对标点符号进行替换呢？

6·As Dr Poore points out, it is easy to undertake to preserve a forest, but difficult to do so in practice.

玻尔博士指出，保护森林说说容易，实际做起来却很难。译者按：be undertake to do sth。

7·How much time do I have to spend on this project, and is this a good time during my life to undertake it?

多少时间我都花费在这个项目，而这是一个好时机，在我的生命来承担吗？

8·This is why it is so important to undertake large clinical trials rather than assuming drugs will only do what is expected of them.

这就是为什么开展大型临床研究比认定药物仅发挥其应有作用的重要性。

9·Undertake something that is difficult; it will do you good. Unless you try to do something beyond what you have already mastered, you will never grow.

从事困难的事，这对你有好处。除非你尝试去做你已精通之事以外的事，否则你永远长不大。

10·Do doctors undertake a number of unpaid, speculative operations in order to convince people that they really need a hip replacement? No.

医生会不会为了要说服病患更换人工关节，而进行许多没付钱的、不确定性的手术？