This is the 12516th most frequent Korean word.
대기오염
Air pollution.
'대기오염' is used as the subject of the sentence, directly referring to the concept of air pollution.
대기오염이 심각한 문제로 대두되고 있다.
Air pollution is emerging as a serious issue.
'대기오염' here serves as the object of the sentence, specifying the target of reduction efforts.
대기오염을 줄이기 위한 새로운 정책이 필요하다.
New policies are needed to reduce air pollution.
'대기오염' is used as part of a cause-effect relationship, explaining the reason for health issues.