전공major; specialty 공격attack; raid 공격적attacking; being belligerent 공격적attacking 전공과목major course 총공격all-out attack; full-scale attack 침공invasion; attack 특공대special forces 협공pincer movement 공격성aggression

방지prevention 방충망screen; mosquito net 소방관firefighter 소방대원fire department 소방서fire station 소방차fire engine; fire truck 예방prevention 예방법preventive measure 공방battle 국방national defense

개인전individual sport 단체전team sport; team competition 도전challenge 도전자challenger 도전장challenge 도전적being defiant 도전적defiant; challenging 작전maneuver; tactics; strategy 전쟁war 준결승전semifinal