This was done to permit the Colorado River to flow away from the construction area.

VOA: special.2010.10.27

Then I insulate everything, you know, take it away and see if there's any heat flow.

然后让所有东西与它绝热，把它拿走看看有没有,热量流动。

麻省理工公开课 - 热力学与动力学课程节选