Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
조차장장은 기차의 안전한 운행을 책임진다.jochajangjang-eun gicha-ui anjeonhan unhaeng-eul chaegimjinda.The yardmaster is responsible for the safe operation of the trains.