看不出(問題所在);說不出(差別)
not put your finger on sth
看不出(問題所在);說不出(差別)
to not be able to identify what is wrong or different about a particular situation
There was something odd about him but I couldn't put my finger on it.他有些古怪,但我說不出到底是什麼。
釋義來自《牛津高階英漢雙解詞典》第 9 版