They often work for advertisement agencies.

他们经常为广告公司工作。

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They often work long hours, but many vets say that their job is exciting and fun.

他们经常工作很长时间，但许多兽医说他们的工作既刺激又有趣。

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They like music and dancing, and they often work in fairs and traveling shows.

他们喜欢音乐和舞蹈，经常在市集和巡回演出中表演。

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This is actually very representative of when you do research in the laboratory, you will find often things do not work quite exactly as they worked 20 minutes ago when you just checked it in your office, for example.

在实验室做研究时,这个实际上是非常具有代表性的，举个例子,当时只是在办公室核查它时,你经常会发现事物无法,像它们20分钟之前那样精确的工作。

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That is partly because they often work in different fields, and many of them are part-timers with lower hourly rates.

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They often work entirely alone, with little or no safety training.

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For one thing, they often work in the financial services industry.

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