对不上

don’t match

→ 对
phrase Rare #22,725
don’t match Used when two things do not correspond, agree, or add up. It can also mean that something cannot be matched or reconciled. The opposite is 对得上.
CH: 这两个数字对不上。
EN: These two numbers don’t match.

就是对不上

They just don't match.

— 办公室的故事 (1977)

对不上

It doesn't match.

— 办公室的故事 (1977)

两份交代对不上是吧

These two accounts don't match up, do they?

— 末代皇帝 (1987)

对不上就是

It just doesn’t line up, I mean.

— 办公室的故事 (1977)

怎么对不上

Why don’t they match?

— 办公室的故事 (1977)