clean as a whistle
非常干凈,一塵不染
口語(yǔ)·形容非常干凈或純潔
英文釋義
completely clean or pure
例句
After scrubbing for an hour, the kitchen floor was clean as a whistle.
典故來(lái)源
源自哨子吹過(guò)后內(nèi)部干凈無(wú)雜物,比喻徹底干凈。