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。

《柯林斯英汉双解大词典》

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。

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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。

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These holes let water slowly pass through the walls of the filter.

VOA: special.2009.06.22

Tests have shown that the filter produces safe drinking water.

VOA: special.2009.06.22

The water filter costs little to make.

VOA: special.2009.06.22

We often take these services for granted, such as the ability of the forest to filter water or produce oxygen.

UNESCO: Social and Human Sciences

The microscopic whiskers can stop bacteria in a face mask or filter out water droplets in a hospital's air conditioner.

FORBES: Back on Track

Beyond that, it was fascinating to see seeing what Detroit automakers are doing to reduce their carbon footprints, like using green roofs that insulate their buildings, porous pavement to filter rain water and even solar panels to help power their facilities.

FORBES: An Eye-Opening Trip To The Motor City