名词
中文翻译：义务
同义词：
['duty', 'responsibility', 'obligation']
例句：
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1.He felt a strong sense of obligation to help his friend in need.
他感到有强烈的义务去帮助需要帮助的朋友。
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2. The company's policy is to provide employees with the necessary tools and resources to perform their duties effectively.
公司的政策是提供员工必要的工具和资源，以便有效地履行他们的职责。
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3.The teacher had an obligation to ensure that all students understood the material.
老师有义务确保所有学生理解材料。