名词
中文翻译：护腿
同义词：
['knee guards', 'knee pads']
例句：
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1. He put on his kneeguards before he started running.
他开始跑步前穿上了护膝。
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2. Thesoldier had to wear kneeguards during the battle.
士兵在战斗中不得不穿护膝。
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3. The athleteswore knee guards during the competition.
运动员们在比赛中穿着护膝。