动词短语
中文翻译：对某人施加义务
同义词：
['put a duty on', 'impose a duty on例句：1. The company laid an obligation on all employees to work overtime.（公司要求所有员工加班。）']
例句：
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1. The company laid an obligation on all employees to work overtime.
公司要求所有员工加班。
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2. The government laid an obligation on the citizens to contribute more to public welfare.
政府要求公民为公共福利贡献更多。
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3. The teacher laid an obligation on the students to study diligently.
老师要求学生勤奋学习。