idiom
square peg in a round hole
某人或某物不适合或不属于特定的地方或情况
Meaning
someone or something that doesn't fit or belong in a particular place or situation
Example
Putting a modern building in a historical district is like trying to fit a **square peg in a round hole**.
把一座现代建筑放在一个历史区域里,就像试图把**square peg in a round hole**放进去。