In the study, scientists placed highly sensitive measuring equipment two hundred to two hundred seventy meters under the ocean's surface.

VOA: special.2009.07.07

That was the eventual message that I got, but it was sort of, it was not on the surface, it was not obvious, because the story, the two movies were sort of sad... ? Anybody want to say something about it?

这就是我得到的最本质的信息，但因为这两部电影都有些伤感，以致这些信息都是隐晦的，不是一眼能看出来的。,还有人想对此说些什么吗？

麻省理工公开课 - 电影哲学课程节选

Water in the sand between the two pots evaporates through the surface of the larger pot, where drier outside air is moving.

VOA: special.2009.02.09

It carried oxygen,water, electricity and food for two men for two days on the moon's surface.

VOA: special.2009.07.22

It shows two ducks that have just been shot by a hunter as they fly above the surface of a wide expanse of water.

VOA: special.2010.07.25

"It is a transponder that is put about two feet below the surface.

VOA: standard.2010.07.22