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
해저터널은 두 도시를 연결하는 중요한 교통 수단입니다.haejeoteoneul-eun du dosireul yeongyeolhaneun jungyohan gyotong sudan-imnida.The undersea tunnel is an important means of transportation connecting two cities.