Algae can be grown on waste land in plastic tanks called bioreactors, with little more than sun, heat and water - and the water can be salty, which leaves freshwater for food crops.
可以把藻类放在称为“生物反应器”的塑料罐里生长在荒地上，只要有太阳、热量和水就可以-并且还可以用咸水，这就把淡水留给了食用庄稼。
His face was broad and craggy from the sun, with salty whiskers and a lower jaw that protruded slightly, making him look prouder than he felt.
脸上很多皱纹，胡子拉碴，下颚有些轻微的突出，在阳光下看起来比他自己觉得还冠冕堂皇。
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