名词
中文翻译：义务日
同义词：
['obligation day', 'duty day', 'liability day']
例句：
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1.The company is holding a meeting on the day of obligation to discuss its financial performance.
公司正在义务日召开会议，讨论其财务状况。
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2. The day of obligation falls on the first Monday in October.
义务日落在十月的第一个星期一。
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3. He was required to attend the day of obligation at the company's headquarters.
他被要求在公司的总部出席义务日。