강의lecture 강의록lecture notes 강의실classroom; lecture room 민주주의democracy 의무duty; responsibility; obligation 의무적being mandatory; being obligatory; being compulsory 의무적mandatory; obligatory; compulsory 정의definition 채식주의vegetarianism 초현실주의surrealism

경찰police; policing 경찰서police station 경고warning; caution 경비실guard room; guard house 경비원guard; security guard 경찰관police officer; cop 경찰차police car; patrol car; squad car 교통경찰traffic police 교통순경traffic cop; traffic officer 순경police constable