Source : CEDICT

lit. doesn't hurt, doesn't tickle (idiom); sth is wrong, but not quite sure what/fig. not getting to any matter of substance/scratching the surface/superficial/perfunctory

Source : CEDICT

lit. doesn't hurt, doesn't tickle (idiom); sth is wrong, but not quite sure what/fig. not getting to any matter of substance/scratching the surface/superficial/perfunctory