动词短语
中文翻译：Unknown
同义词：
['obligated', 'committed', 'boundby duty']
例句：
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1. Hefelt a sense of duty bound to helpthe needy.
他感到有责任帮助需要的人。
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2. The doctor was bound by dutyto attend the patient's bedside.
医生有义务去病人床边。
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3. She wasbound by her duty to report the incidentto the authorities.
她有义务向当局报告这一事件。