I can't take on any extra work.

我不能承担任何额外工作。

《牛津词典》

He was doubtful about accepting extra work.

他拿不定主意是否接受额外工作。

《牛津词典》

All this extra work is getting on top of him.

这么多的额外工作快使他吃不消了。

《牛津词典》

Men with treadle pumps often no longer have to leave the farm to seek extra work in cities.

VOA: special.2009.08.17

get back to the initial point is going to require some input from outside, like heat or extra work or extra heat or something because you've done an irreversible process.

如果要逆转它,回到初始点，就需要外界的投入，比如额外的功，额外的热量等等,因为你进行了一个不可逆过程。

麻省理工公开课 - 热力学与动力学课程节选

But my boss called me in on the weekend to do some extra work.

但是我老板在周末把我叫去，做一些额外的工作。

The thing is 实战 - SpeakingMax英语口语达人

Some new clients, plus extra work from solid old stalwarts like BMW, Lockheed Martin and Verizon .

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But the extra work doesn't seem to justify the size of the fee hikes.

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The order was dropped after municipal clerks complained about the extra work it would bring.

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