sea tunnel的用法和樣例：
例句
- The WHC is a dual three-lane, immersed-tube road tunnel linking the West Kowloon Expressway with the Western District.
西區海底隧道是一條雙程三線(xiàn)沉管行車(chē)隧道，連接西九龍快速公路與港島西區。 - Construction of China's second undersea tunnel has kicked off yesterday in Qingdao City, east China's Shandong Province.
中國的第二條海底隧道昨天在中國東部的山東省青島市舉行了開(kāi)工儀式。
