undersea delta水下三角洲Coaxial cable is also used for undersea telephone lines.同轴电缆也用于海底电话线.undersea cameras海底摄象机The technology of undersea mining was then undeveloped.那时候深海采矿技术还不成熟....an undersea pipeline running to Europe....
The technology of undersea mining was then undeveloped.那时候深海采矿技术还不成熟.Technology is changing all that. It's literally parting the waves for today's undersea explorers.技术正在改变这一切, 它正在劈波斩浪为今日的水下探索者开路.For a similar ...