submarine tunnel meaning in Chinese

海底遂道
海底隧道

Discussion on feasibility for constructing submarine tunnel under qiongzhou channel
论修建琼州海峡隧道的可行性
As a result of its unique island country geographical characteristics and in order to promote the economic and social development , large - scale construction of cross - sea bridges and submarine tunnels was carried out by japan after the second world war , which linked up the traffic between the four main islands of the country
摘要日本由于岛国的独特地理特征，为了促进其经济和社会的发展，在二战之后进行了大规模的跨海桥梁以及海底隧道建设，从而实现了四大主岛陆路交通的联结。