动词短语
中文翻译:Unknown
同义词:
['work upon', 'work with', 'workon']
例句:
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1. The engineerworked on the problem for hours.
工程师花了几个小时来解决这个问题。
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2. They worked on the projecttogether.
他们一起完成了这个项目。
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3. Thescientist worked on a newdrug for several months.
科学家花了几个月时间研究一种新的药物。