英语翻译Weallhavetolearnhowtostopwastingourlimitedwater.Oneofthestepsweshouldtakeistofindwaysofreusingit.Experimentshavealreadybeendoneinthisfield.Todayinmostlargecities,freshwaterisusedonlyonce,thenitrun
英语翻译
Weallhavetolearnhowtostopwastingourlimitedwater.Oneofthestepsweshouldtakeistofindwaysofreusingit.Experimentshavealreadybeendoneinthisfield.
Todayinmostlargecities,freshwaterisusedonlyonce,thenitrunsintowastesystem.Butitispossibletopipetheusedwatertoapurifyingfactory.Thereitcanbefilteredandtreatedwithchemicalssothatitcanbeusedagain,justasitwerefreshfromaspring.
Butevenifeverylargecitypurifiedandreuseditswater,westillwouldnothaveenough.Thenwecouldturntotheoceans.Allwe’dhavetodotomakeuseoftheseawateronearthistogetridofthesalt.Thisprocessiscalleddesalinization,anditisalreadyinuseinmanypartsoftheworld.
