动词短语
中文翻译：膝盖着地
同义词：
['kneel', 'collapse', "fall flat on one's face", 'give up completely']
例句：
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1. Heknelt down and started to weep.
他跪了下来开始哭泣。
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2.The team collapsed after losing the match.
球队在输掉比赛后崩溃了。
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3. She gave up completely when she found out the truth.
她彻底放弃了，因为她发现了真相。