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He fall off the bike and get a scrape on his knee.
他从脚踏车上摔下来，擦破了膝盖。
youdao
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He had the bad luck to fall off a bike and hurt his knee just before the race.
他的运气真坏，恰恰在赛跑前从自行车上跌了下来，伤膝盖。
youdao
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He had the bad luck to fall off a bike and hurt his knee just before the race.
他的运气真坏，恰恰在赛跑前从自行车上跌了下来，伤膝盖。
youdao