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他笨拙地摔倒了，紧抓住右膝盖痛苦地蹲了下去。
He fell awkwardly and went down in agony clutching his right knee.
《柯林斯英汉双解大词典》
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他昨天滑雪的时候摔倒了，伤了膝盖。
He fell down when skiing yesterday and hurt his knees.
youdao
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他摔倒在地撞伤了膝盖。
He went down on one knee.
youdao
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他摔倒在地撞伤了膝盖。
He went down on one knee.
youdao