☆ ADVANCED LEVEL : 0 ☆☆ INTERMEDIATE LEVEL : 0 ☆☆☆ ELEMENTARY LEVEL : 0 NONE : 1 ALL : 1

• 환경 오염 (環境汚染) : 자원 개발로 인해 자연이 파괴되거나 자동차 배기가스, 공장 폐수 등으로 환경이 더럽혀지는 일. None
🌏 ENVIRONMENTAL POLLUTION: A phenomenon in which the natural environment is destroyed by resource developement or becomes polluted because of exhaust from cars, waste water from factories, etc.

• Human relationships (255) • Life in Korea (16) • Weekends and holidays (47) • Expressing date (59) • Using the hospital (204) • Making a phone call (15) • Mass media (47) • Directions (20) • Describing events, accidents, disasters (43) • The arts (76) • Economics and business administration (273) • Pop culture (82) • Introducing (introducing family) (41) • Pop culture (52) • Describing food (78) • History (92) • Language (160) • Exchanging personal information (46) • The arts (23) • Greeting (17) • Marriage and love (28) • Occupation & future path (130) • Politics (149) • Social issues (67) • Press (36) • Using transportation (124) • Using public institutions (library) (6) • Describing location (70) • Inviting and visiting (28) • Philosophy, Ethics (86)