

공장 때문에 강 오염이 심해졌어요.
[koŋt͡ɕaŋ t͈ɛmune kaŋ ojʌmi simhɛt͡ɕjʌs͈ʌjo.]
River pollution has gotten worse because of the factory.
환경 오염을 줄이려고 노력하고 있어요.
[hwankjʌŋ ojʌmɯl t͡ɕuliljʌko noljʌkʰako is͈ʌjo.]
We're trying to reduce environmental pollution.
이 지역은 공기 오염이 심하지 않아요.
[i t͡ɕijʌkɯn koŋki ojʌmi simhat͡ɕi anajo.]
Air pollution isn't bad in this area.
"오염" is in the lesson "Manufacture" (Level 37), along with 14 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.