do sth.off the top of one's head



毫无准备地干什么事情，临时应付



　　

　例句：



I'll just have to give the speech off the top of my head. There's no time to write it down.

　　　　　　　

没有时间写讲稿，我只好即席发言。


关键字:英语词汇
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