Translation of "Someday" in Korean

And could someday encompass the globe.

언젠가는 온 세상을 뒤덮을 것입니다.

Not "someday, maybe, if we're lucky" solutions,

"운 좋으면 언젠가는" 라는 식이 아니라

It's not that I only did things that would maybe someday

그냥 소극적으로

If she practices hard, someday she will be able to play the cello.

열심히 연습하면 첼로를 연주할 거라고 말하는 것과 같게 들려요.