| 释义 |
rack one's brains
try one's best to think；try to remember sth．one has known；think hard with little or no result 绞尽脑汁；努力思考仍无结果；尽力回忆
*He racked his brains during the test trying to solve the difficult problem．考试时他绞尽脑汁试图把难题解出来。
*Henry racked his brains trying to remember where he left his key．亨利想来想去，试图回忆起他把钥匙放在什么地方了。 |