不可同日而語 [ㄅㄨˋ ㄎㄜˇ ㄊㄨㄥˊ ㄖˋ ㄦˊ ㄩˇ; bu4 ke3 tong2 ri4 er2 yu3] lit. mustn't speak of two things on the same day (idiom); not to be mentioned in the same breath incomparable ◄ ►
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