Every attack takes place near a body of water or a water- based name.

犯罪现场不是在水边 就是死者姓名与水有关。

We chose concrete because it's heavy and displaces water, based on Archimedes' principle.

基于阿基米德的原理，我们选择了混凝土，因为它很重，可以排水。

Water based solutions, earlier I called them aqueous solutions.

水基溶液，之前我称它们为水溶液。

So what I use in the morning is this water based cleanser.

所以我早上使用的是这种水基清洁剂。

But the problem with dividing up water based on our worldview is that our worldview is...well...fluid.

但是根据我们的世界观来划分水的问题在于我们的世界观是… … 嗯… … 流动的。

Since we humans have a habit of making things all about us, historically we have divvied up all that water based on our own perceptions.

由于我们人类习惯于让一切都围绕着我们， 从历史上看，我们根据自己的看法分配了所有的水。

This has been an important question. Let me ask you guys: how much water, based on what you know so far, could you take out of, say, an aquifer...under the city?

那是个重要的问题。我来问问你们：基于你们目前的知识，你们觉得从城市下面的一个含水层能取到多少水？