rack your brains

意思

to think very hard to remember or solve something

苦苦思索，想回憶起或解決某事.

例句

1. 1I racked my brains, but I couldn't remember where I had parked the car.
2. 2We've been racking our brains all afternoon for a name for the new café.
3. 3Ben racked his brains for the answer to the last quiz question, but it wouldn't come to him.
4. 4Don't rack your brains over that crossword clue; I'll look up the answer online.
5. 5Aisha is racking her brains to think of a present for her grandad's ninetieth birthday.

文法

rack 變化形式：racks、racking、racked。your 隨主詞變化：my、his、our。也說 rack your brain。

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