Waste water is pumped from the factory into a nearby river.

工厂里的污水被抽到了附近的河里。

So we mustn't waste water.

所以我们不能浪费水资源。

A lot of poisonous waste water comes from that chemical factory.

那个化工厂排出大量有毒的废水。

If we continue to waste water, the river would eventually dry up.

如果我们继续浪费水的话，河流总有一天会枯竭的。

There are several chemical factories pouring waste water into the stream.

有几家化学工厂把污水排入河里。