Translation of "오래가진" in English

하지만 오래가진 않았죠

But that didn't last for long.

면은 밝게 타오르지만 오래가진 못하거든요

because cotton burns bright, but not for very long.

아주 오래가진 않겠지만 조금은 도움이 되겠죠

It's not gonna keep me going forever, but it's going to help a little bit.