| 短语 | rack one's brains |
| 释义 | rack one's brainstry 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。 |
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