How does Roman know whales poop at the surface?

罗曼怎么知道鲸鱼在水面排便？

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There it remains, sometimes for long periods, before emerging at the surface again.

在那里，地下水在重新涌出地表之前，往往可以保存很长一段时间。

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His plan is to establish giant "forests" of kelp seaweed (a type of algae) at the surface of the ocean.

他的计划是在海面上建立一种巨大的巨藻（一种海藻）“森林”。

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Instead of burying the seed pieces, place them at the surface.

VOA: special.2009.03.10

It's these cells that are sitting at the surface here that are responsible for determining what becomes part of us and what stays outside.

位于肠道表面的细胞,决定了,吸收哪些分子而排出哪些分子

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So, one difference between photoelectron spectroscopy and, for example, the photoelectric effect is that in this case, we're not just looking at one energy level, which is what we were looking at from the surface of a metal, now we're talking about this gaseous atom.

光电子能谱与光电效应的不同点在于，以这种情况为例，我们不只关心一个能级，就像原来在金属表面那样，现在我们研究的是气体原子，所以，我们可以从原子中。

麻省理工公开课 - 化学原理课程节选

Instead of remaining concentrated at the surface, dispersed oil pollutes the entire water column.

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This allowed natural gas to migrate up the hole and explode at the surface.

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Bathtub conditions at the surface of the Atlantic Ocean gave him his answer.

CNN: graphic