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sharp as a tack 機靈的（成語）
英文釋義
(IDIOM) Very intelligent.
例句
Our accounting consultant may be old but she's sharp as a tack, and in only a few minutes she found a number of errors in our accounts.
我們的會計顧問雖然年老，但是非常機靈，她在幾分鐘內就發現了賬目中的很多錯誤。
n. 會議記錄，(復數)分鐘
