填介词：Simon fell _____ his bike and hurt his leg.请告知理由
问题描述：
填介词：Simon fell _____ his bike and hurt his leg.请告知理由
答
down from/off
fall down from=fall off意思是从.跌落
翻译是：Simon从自行车上摔下来了并且伤了他的腿
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