As a result, the average annual flow of the waters in the basin amounts to just 24, 000 gigalitres a year which is the lowest rate of flow of any of the world's greatest river systems.

因此，该流域的年均水流量仅为 24000 千亿升，是世界上最大的河流系统中流量最低的。

It's not exactly a speed demon, though: the rate of flow is only a couple of centimeters per year, so it takes about 50 or 60 thousand years for a blob to move a single kilometer.

上升的速度每年只有几厘米，所以一团物质仅移动一公里就需要5到6万年的时间。

And this is part of what the information delivered to Congress during the spill about the rate of flow was so significant. So, what you will see now is going into this civil settlement.

这是在泄漏期间向国会提供的有关流速的信息非常重要的一部分。所以，你现在将看到的是进入这个民事和解。