动词
中文翻译：工作
同义词：
['operate', 'function', 'labor', 'exert effort']
例句：
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1.The workers are hard at work on the construction site.
工人们正在工地上辛勤工作。
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2.The business is doing well, but we need to work harder to maintain it.
生意做得很好，但我们需要更努力地维持它。
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3. She works as a nurse in the hospital.
她在医院当护士。