Li and his workmates need to work extra hours to take care of the animals from March until mid-May.

从3月到5月中旬，李和他的同事需要加班来照顾这些动物。

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Those who work extra hours will get an overtime pay.

加班的人能得到加班工资。

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These who work extra hours will get on overtime pay.

加班的人能得到加班工资。

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

VOA: special.2009.08.17

I know I will need to work extra hard.

我知道我得在工作上再加把劲儿。

I want to 实战 - SpeakingMax英语口语达人

So, all right, we'll try and make this class work as smoothly as we can, allowing for this extra thing.

我会尽量让,课堂顺利地进行下去,还有一件事

耶鲁公开课 - 博弈论课程节选

Ambitious people who want to work extra hours would be told to go home.

BBC: Viewpoints: Working time dispute

Do volunteer to work extra shifts or to put in time during off hours.

FORBES: How to Negotiate a Year-End Raise

Addenbrooke's Hospital in Cambridge, where 200 more are needed, is asking existing staff to work extra shifts.

BBC: Addenbrooke's to recruit nurses and midwives in Europe