Translation of "Ain't" in Korean

Anything that's living in here ain't gonna be in there any longer.

여기 있던 녀석은 더는 안 올 겁니다

When you're moving through these sort of tunnels, if you get lost, that ain't fun.

이런 갱도를 따라 이동할 때 길을 잃으면 곤란하죠