

오늘 중요한 면접이 있어요.
[onɯl t͡ɕuŋjoan mjʌnt͡ɕʌpi is͈ʌjo.]
I have an important interview today.
중요한 서류를 잊지 마세요.
[t͡ɕuŋjoan sʌljulɯl itt͈͡ɕi masejo.]
Don't forget the important documents.
이건 별로 중요한 일이 아니에요.
[ikʌn pjʌllo t͡ɕuŋjoan ili aniejo.]
This isn't a very important matter.
"중요한" is in the lesson "Application" (Level 40), along with 12 other useful words. LinDuo has 180 topic lessons like this one, 2,380 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.