The best prevention for cholera is to boil or filter water, and eat only well-cooked food.

预防霍乱最好的方法是把水煮沸或过滤，并且只吃煮熟的食物。

What we should do is just buy a sports bottle and fill it up with filter water from our faucet or our refrigerator.

我们应该做的是买一个运动用水瓶，并灌上水龙头或者是冰箱里的过滤水。

Charcoal is used to filter water.

木炭是用来过滤水的。

Socks can help collect and filter water, which, as we've learned, is crucial to survival.

袜子能帮助收集并过滤对我们生存至关重要的水。

That have weight, the use of filtration, filter water filter paper used in all kind of solid particles.

称过重量后，采用过滤法，用过滤纸滤出水样中的全部固体颗粒。