据估计，在最高的海底山中，几乎一半是在深海海底，而且那里海洋生物特别丰富。

It is estimated that roughly half of the world's highest seamounts-areas that rise from the ocean floor and are particularly rich in Marine life-are also found in the deep ocean.

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缅因只剩下了70条深海捕鱼船，不足20世纪90年代的一半，近十年减少得尤为迅速。

There are only 70 groundfishing vessels left in Maine, less than half the number in the 1990s, and a far cry from decades past.

youdao

半深海- 深海相区、 滨浅海相区和三角洲相区是较为有利的油气分布区。

The bathyal - abyssal facies , littoral facies , neritic facies and delta facies are beneficial to and gas exploration.

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