"그녀는 열심히 공부하지 않아요."

Translation: She does not study hard.

[GuiyeounTokki]

Diligently is definitely more accurate. Hard can mean too many different things according to context. It's confusing for learners.

[Yo-Han-Joon]

네. 그녀는 예쁜데 게을러요!

[nochu971]

Isn't 열심히 diligently or someone informed me wrong?

[ravenmoo]

I was taught in my Korean class that is was "diligently" so... lol It should be accepted.

[wintertriangles]

It can be. Hard works fine too though.

[Woodsman72]

I supose it means hard. Diligently is propabely 부지런히... Am I right?