动词短语
中文翻译：坚持
同义词：
['push', 'insist', 'pound']
例句：
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1. She hammered on the door for hours until she got an answer.
她敲了门几个小时，直到得到了回答。
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2. The team needs to hammer on their strengths in order to win the game.
这个团队需要坚持他们的优势才能赢得比赛。
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3. The speaker hammered on the importance of education during the presentation.
演讲者在演讲中强调教育的重要性。