The reverse-osmosis process is increasingly being used not just for desalination, but to recycle wastewater, too.

逆渗透法工序不止是在海水淡化工业得到越来越多的应用，它在废水再生工业界也大展身手。

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For every two gallons of water the plant takes in, its reverse osmosis process will make one gallon of fresh water and send back to the ocean one gallon with twice the salinity level.

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As every schoolchild should know, water moves from a dilute to a concentrated solution through a semipermeable membrane by a process called osmosis.

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But when you disappear into the great anonymity of a big city like London, what you find is that you then resurface and you've actually, by some process of osmosis, brought yourself into company with like minds.

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