고생을

trouble

→ 고생
phrase Rare #32,271
trouble 을 marks 고생 as the object of the verb. In phrases like 고생을 하다, it means to go through hardship or trouble.
KO: 왜 이런 고생을 해야 해?
EN: Why do we have to go through all this trouble?

그 고생을 또 할 순 없어

I can't go through all that again.

— No Other Choice (2025)