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1·The ocean bottom is made up of smooth plains.

洋底 由平坦的平原构成。

2·What do you think the ocean bottom is made up of?

你认为海底是由什么组成的？

3·Most of the ocean bottom is made up of smooth plains.

海底大部分是由平坦的平原构成。

4·Many high-gain stations will be deployed on land and ocean bottom.

在陆地和洋底要设置许多高增益的台站。

5·A method for second positioning of ocean bottom cable is demonstrated.

文章提出了海底电缆二次定位的一种新方法。

6·Aside from biological collections, Scripps also houses cores of sediment collected from the ocean bottom.

除了生物类的藏品外，克里普斯海洋研究所还保存有从海底收集来的沉积岩芯。

7·The layers of mud and microbes help geologists understand forces at work on the ocean bottom deep in the past.

泥层以及其中的微生物可以帮助地质学家了解深海海床之前所经历的外力作用。

8·Days earlier, an undersea volcano had torn open the rock of the ocean bottom, 425 feet below the surface.

几天前，海面下的一座火山把水面下425英尺深处的洋底岩石撕裂开来。

9·First-break positioning technique for ocean bottom cable is then introduced to remove above deficiencies.

为此，我们引进了海底电缆初至波定位技术。

10·Pertaining to sediments or environments in seas or ocean waters, between the depth of low tide and the ocean bottom.

系指介于低潮面和洋底之间深度的海水或大洋水中的沉积物或沉积环境。