动词
中文翻译：敲打
同义词：
['hit', 'tap', 'strike', 'knock', 'bump']
例句：
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1. The doorbell rang and the mailman came to knock copy.
门铃响了，邮递员来敲门。
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2. He knocked copy on the door and asked for the key.
他敲门并要求钥匙。
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3. The thief knocked copy at the window before breaking in.
小偷在打破窗户之前敲了敲窗户。