청년young person; youth 청소년teenager 매년every year 학년school year; grade 백년a hundred years 학년school year 내년next year 년nyeon 매년being annual 매년year by year; annually

편리convenience; handiness 이용use; utilization 권리right; authority; power 불리disadvantage 불이익disadvantage; penalty; detriment 승리victory 유리being profitable; being beneficial 이기적being selfish; being egoistic; being egocentric 이기적selfish; self-centered; egotistic 이용객user; passenger; visitor

청취율ratings 할인율discount rate 환율exchange rate 효율적being efficient; being effective 효율적efficient; effective 감소율reduction ratio 비율ratio; proportion 비효율적being inefficient 비효율적inefficient 사망률death rate