Dawn returns, and the plankton sinks back into the depths. 黎明到来,浮游生物又回到深海
Deep water plankton start to rise from the depths and another hungry army prepares to receive it. 深海的浮游生物开始浮上水面, 另一支饥饿的部队准备接受这些猎物
sometimes diving to depths of forty meters to reach them. 有时它们潜到40米深
where incessant gale force winds draw nutrients up from the depths ensuring plenty of food for king penguins. 不间断的大风把海底的养分送上来 从而给帝企鹅提供了丰富的食物
Along the coast of California, ocean currents carry a constant supply of nutrients up from the depths to the surface layers. 在加利福尼亚沿海,洋流持续不断的把养分从海底 带到海平面上来
Huge shoals migrate from their overwintering grounds in the depths 大量鱼群从海洋深处的冬歇地赶来
The turbulence stirs the water, and draws nutrients up from the depths 湍流激起海水 将深处的养分搅上来
just as their fathers did in the depths of winter. 就像寒冬时节它们的爸爸做的那样
Yet these depths were first explored only two years before man landed on the moon. 然而人类直到登月前两年 才第一次进入这个深渊