Water is forced through the pipes at high pressure.

水在高压下流过水管。

Do your distillation under high pressure or low pressure.

在高压或低压下进行提纯。

Because they figured how to do this at high pressure and high temperature.

因为他们了解了，怎样在高压高温下进行这个反应。

High pressure makes it hard for clouds to form, and thus for rain to fall.

高压很难形成云，提供降雨。

So you can build up some high pressure, what's called osmotic pressure.

所以你能逐步积累起较高的压强，那就叫做渗透压。