动词短语
中文翻译：提交
同义词：
['submit', 'hand in', 'return']
例句：
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1. Please turn in your homework before class.
请在课前交上你的作业。
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2. The student handed in his assignment on time.
那名学生按时交上了他的作业。
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3. She turned in her passport at the airport security checkpoint.
她在机场安检处上交了她的护照。