| 词汇 | rack your brain(s) |
| 释义 | ● rack your ˈbrain (s )to think very hard or for a long time about sth 绞尽脑汁;冥思苦想◆ She racked her brains , trying to remember exactly what she had said . 她绞尽脑汁,想要回忆起她到底说过些什么话。See also brain |
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