动词短语
中文翻译：敲掉
同义词：
['break off', 'knock off', 'knock down']
例句：
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1. Heknocked the end off the bottle with ahammer.
他用锤子敲掉了瓶子的末端。
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2.The car was so old that it neededto be knocked off the road.
这辆车太旧了，需要被挪开。
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3.She knocked off her glasses and looked atthe clock.
她摘下眼镜看了看表。