1·They are building a submarine cable tunnel.
他们正在建设一条海底电缆隧道。
2·They are building a submarine cable tunnel.
建设一条海底电缆隧道。
3·The workers are laying a new submarine cable.
工人们正在铺设新的海底电线。
4·The third one was about building submarine cable tunnel.
第三则是关于建造海底电缆隧道。
5·A new submarine cable was laid from England to Holland.
英国至荷兰间铺设了新的海底电缆。
6·A new submarine cable was laid from England to Netherlands.
英国至荷兰间铺设了新的海底电缆。
7·A new submarine cable was laid between England and Holland.
英国至荷兰铺设了新的 海底 电缆。
8·International Submarine Cable Leased-Circuit Business: four years.
国际海缆电路出租业务：四年。
9·International Submarine Cable Leased-Circuit Business: three years.
国际海缆电路出租业务：三年。
10·The electrical test of submarine cable is an indispensable link after laying and installing the cable.
海底电缆的电气试验是电缆敷设和安装后不可缺少的环节。