建造水下运输通道已是20世纪初的事了,而克服巨大的海底障碍开凿隧道却与之相隔了很长时间。随着各种先进的地下施工设备相继采用,施工技术不断提高,以及毗邻国家、特别是一些岛国之间的经济贸易不断发展扩大,使开凿海底隧道成为现实。 The construction of underwater transport lanes was something of the early twentieth century, and a long time had passed since tunneling to overcome massive sea-bed obstacles. With the successive adoption of various advanced underground construction equipment, the continuous improvement of construction technology and the constant development and expansion of economic and trade relations between neighboring countries, especially some island nations, the opening of the Cross-Harbor Tunnel has become a reality.