蒋健棠英语实用句子(124):He had to drop out of the race
时间：2014-08-07 08:31:57
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（单词翻译）
He had to drop out of the race because his leg was injured1.
因为他的脚受伤了，他不得不退出比赛。
drop out有退出和退学的意思。
He dropped out of school when he was fifteen.
他15岁时退学了。
如果drop out连成一个单词，写成dropout或drop-out，就变成一个名词，意思是退学生。
His mother doesn't want him to be friends with those dropouts.
他的妈妈不想他和那些退学生交朋友。
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