名词
中文翻译：无用的工作
同义词：
['pointless work', 'pointless task', 'pointless endeavor']
例句：
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1. The useless work of cleaning the office is a waste of time.
清理办公室的无用工作是浪费时间。
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2.The manager was frustrated by the pointless work of his employees.
经理对他的员工毫无成效的工作感到沮丧。
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3. The pointless work of researching new products is not worth the effort.
研究新产品的无意义工作不值得付出努力。