It's middle ground between shallower waters and the deep ocean floor, but still has enough light for coral to grow and reproduce.

其位水域和底之间的中间地带，但是仍然有足够的光线使珊瑚得以生长和繁殖。

Among the photos it captured were unmistakable images of a wrecked sub on the deep ocean floor.

在它拍摄的照片中， 有一张清晰无误的底残骸图像。

Another important idea which is the one that I would subscribe to is down at the bottom of the oceans in deep-sea hydrothermal vents where you've got this continuous flow.

另一个我赞同的重要观点是在底的热液喷口那里有持续的水流。

These rocks contain rare earth minerals, and right now there are companies that are building bulldozers that would be capable of mining the deep sea floor for those rocks.

这些岩石含有稀土矿物，目前有一些公司正在建造推土机， 以便能够开采底的这些岩石。

It is often said that more is known of the moon surface exposed anyone with the telescope then about the geography of the deep sea floor, which a dark cloak of water obscures.

人们常说，通过望远镜可以看到的月球表面比我们底地理的了解还要多，因为被一层厚厚的水幕遮蔽了。

It's a handful of vehicles, like cars, I guess, like the size of a small car, but in a sphere, sending humans down to go look, see what's down in the deep ocean.

这些设备就像几辆汽车，我猜， 大小相当一辆小型汽车，但呈球形， 用将人类送至，去探查底的奥秘。

But these continents, in terms of a strict geological definition  actually extend outward some way into the sea, in the form of shallow continental shelves, before  suddenly dropping down into the abyssal plains of the deep oceans.

但这些大陆，从严格的地质定义来看，实际上通过大陆架向外延伸了一段距离，然后突然下降到的底平原。