he was so sleepy that he couln"t keep his eyes open .为啥用open

问题描述:

he was so sleepy that he couln"t keep his eyes open .为啥用open ,
1个回答 分类:英语 2014-11-24

问题解答:

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keep one's eyes open固定短语,意思是让眼睛睁着.
 
 
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