动词
中文翻译：执行
同义词：
['perform', 'fulfill', 'observe', 'discharge', 'fulfil', 'perform the duties', "fulfill one's promise"]
例句：
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1. He promised to help me with my homework, but he never fulfilled his promise.
他答应帮我做作业，但他从来没有兑现承诺。
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2. The teacher asked us to fulfill our part of the project before the deadline.
老师要求我们在截止日期之前完成我们的任务。
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3. After the meeting, they agreed to fulfill their promises and come up with a new plan.
会议结束后，他们同意履行自己的承诺并制定一个新的计划。