which is which
成語所屬單字which
which is which — 慣用語
1. Used when you cannot see the difference between two similar people or things.
1.慣用語
釋義
哪個是哪個
Used when you cannot see the difference between two similar people or things.
例句
The two puppies look exactly the same; I can't tell which is which.
Can you help me identify the real painting and the copy? I don't know which is which.