할인discount; reduction 할인권discount coupon 할인율discount rate 할인점discount store; outlet 대할인big discount 인상raise; increase 인용quotation; citation 인하decrease; reduction; cut 흡인absorption; suction; attraction 흡인력pulling power; absorptive power

상하up and down 상수tap water 세상world 영상temperature above zero 탁상시계table clock 향상improvement; enhancement; progress 사상being in history 상good; top 상급반upper grades; higher grades 상급생senior student; upper classmen

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