“桥”是指跨越河流、山谷、障碍物或其它交通线而修建的架空通道。“大陆桥”是指连接两个海洋之间的陆上通道,是横贯大陆、以铁路为骨干、避开海上绕道运输的便捷运输大通道。其主要功能是便于开展海陆联运,缩短运输里程。 “Bridge ” refers to the overhead channel built across rivers, valleys, obstacles, or other traffic lines. “Continental Bridge ” refers to the land passage connecting the two oceans and is a convenient transportation corridor traversing the mainland and taking the railway as the backbone to avoid detouring by sea. Its main function is to facilitate the land and sea transport, shorten the shipping mileage.