最終更新日：2024/06/27
(idiomatic) to be sharp; to be keen; to be on the ball; to have a mind like a steel trap; to be clever
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verb
(idiomatic) to be sharp; to be keen; to be on the ball; to have a mind like a steel trap; to be clever
意味（1）
(idiomatic) to be sharp; to be keen; to be on the ball; to have a mind like a steel trap; to be clever
