Scientists believe strong earthquakes forced the bottom of the sea to rise above the water.

VOA: special.2009.01.07

In fact, the water at the bottom of the waterfall is hotter than the water at the top of the waterfall.

实际上，瀑布底部的水,的确比顶部的水要热。

麻省理工公开课 - 热力学与动力学课程节选

And that was the water at the bottom of the waterfall is probably going to be hotter than the water at the top of the waterfall.

瀑布底部的水,或许比顶部,的水更热。

麻省理工公开课 - 热力学与动力学课程节选

The pot should have holes in the bottom so water can run out.

VOA: special.2009.04.21

Because of this my mother used to make Jell-o that had fruit suspended in it, and the fruit doesn't sink to the bottom like you'd expect it to sink through water, but it stays suspended inside.

正因为如此,当我母亲以前做,那种加水果的果冻的时候,水果并不会沉到果冻底部来,你以为它会像在水里那样,但水果是悬在果冻里的

耶鲁公开课 - 生物医学工程探索课程节选

Containers of water are placed at the top and bottom of the cooler.

VOA: special.2009.11.30

But could find none. "Over time oil does dissipate and can get broken down from bacteria and other organisms in the water, but still they are putting certain dispersants on the oil that makes it sink down to the bottom."

VOA: standard.2010.05.09