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
수송기관은 물품을 안전하게 이동시키는 역할을 합니다.susonggigan-eun mulpum-eul anjeonhage idong-sikineun yeogaleul hamnida.The conveyance means play a role in safely transporting goods.