表ㄅㄧㄠˇ裡ㄌㄧˇ不ㄅㄨˋ一ㄧbiǎolǐ‑bùyī

简表里不一

表面與內在實質不一致；常指思想和言行不一致（與「表裡如一」相對）。例「這筐果子表裡不一」、「此人表裡不一，慣會背後搗鬼」。

英outside appearance and inner reality differ (idiom); not what it seems, saying one thing but meaning sth different