不知輕重 [ㄅㄨˋ ㄓ ㄑㄧㄥ ㄓㄨㄥˋ; bu4 zhi1 qing1 zhong4] lit. not knowing what's important (idiom); no appreciation of the gravity of things naive doesn't know who's who no sense of priorities ◄ ►
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