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- 問題詳情：XI′AN------Todaymorethan2000peoplehavewrittentheirnamesonapaper.Theypromisetouselessenergyandlivealow--carbon(低碳)life.Let′sfollowthem.Cutoffthepowerofyourcomputerwhenyoudon′tuseit.Turnoffthelightswhengoingout.Usebusesmore.Shareyourcarswi...
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