This mass of water cannot escape the general law.

这股水无法逃脱一般法则。

They should not bring much rise in the sea level, since floating ice obeys Archimedes's principle and displaces its own mass of water.

它并不会使海平面上升许多，因为浮冰遵循阿基米德原理排开了相当于它自身的水。

And as this cold mass of water moves northward, it plays a big role in keeping oceans circulating around the globe.

随着这股冷水向北移动，它在保持全球海洋循环方面发挥了重要作用。

But one thing that won't change is the mass of water that’s moving through any given area in the pipe over time.

但有一件事不会改变， 那就是随着时间的推移流过管道中任何给定区域的水量。

But one thing that won't change is the mass of water that's moving through any given area in the pipe over time.

不会改变的一件事是移动的水团 在一段时间内穿过管子的任何强加部分。