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SincethefirstEarthDayin1970,Americanshavegottenalot“gre...
问题详情:SincethefirstEarthDayin1970,Americanshavegottenalot“greener”towardtheenvironment(环境).“Wedidn’tknowatthattimethatthereevenwasanenvironment,letalonethattherewasaproblemwithit,”saysBruceAn...