Forty percent of the waterways have become undrinkable.

百分之四十的河川水道已变得不可饮用。

They found the water was poisonous and undrinkable for people or animals.

他们发现，水是有毒的和不能饮用的人或动物。

I come from Shanghai. Shanghai's water is yellow; it's simply undrinkable.

我从上海来，上海的水简直就不能吃了，而且是黄的。

Also, dirty water from factories goes into rivers and makes it undrinkable.

同样的， 工厂排出到河里的废水也使得水无法饮用。

You should have put the milk in the ice-box; I expect it has become undrinkable by now.

你应该把牛奶放在冰箱里，我想现在都不能喝了。