Translation of "한동안" in English

물방울들이 한동안 형태를 유지하는거죠.

these droplets are sustained for some time --

전 테라포밍을 한동안 공부했어요

I've been studying terraforming for quite some time.

한동안 계속 타오를 거예요 자, 이제 들어가 보죠

And that's gonna keep burning for a while. Okay, let's get in here.

송진 기름이 아주 많이 들었습니다 한동안 계속 타오를 거예요

It's got so many resinous oils in it. And that's gonna keep burning for a while.

북한은 한동안 ICBM을 위해 노력했고, 이제는 북한도 ICBM을 보유한것으로 보입니다

North Korea has been working on one of its own for a while and they now appear to have one.