A new study says that, income notwithstanding, having a demanding, unstable and thankless job may make you even unhappier than not having a job at all.

一项新的研究称，尽管收入是一项必需的要求，但是不稳定的不能获得成就感的工作或许比没有工作使你更不快乐。

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What is more, having worked these physically demanding shifts, which involved pouring concrete, laying kerbs and clearing drains, the boss now has a better informed view of the job.

此外，从事这些繁重的体力工作，包括灌注混凝土、铺设马路崖子和清理排水沟等，让这位老板对员工的工作有了更清晰的认识。

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The researchers believe that living in a group is more demanding mentally than having a lonely existence.

研究者认为，群居型的动物比独处型的动物需要更多的脑力活动。

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While dual career marriages are very demanding and can strain a home, imagine not having enough money to keep a proper roof over your head.

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