열차train 가장행렬costume procession 급행열차express train 치열tooth arrangement; row of teeth 항렬generation 행렬line; parade; march 계열system; faction; department 계열사affiliate 계열화systematization 나열listing; enumeration

해외foreign country; overseas 해외여행overseas travel; trip abroad 외국foreign country 외국어foreign language 외국인foreigner 외출going out; outing 과외extra work 교외suburb; outskirts 교외out-of-school; off-campus 국외outside a territory