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2015—EarthDay’s45thanniversary(周年纪念)—maybethemostexci...
问题详情: 2015—EarthDay’s45thanniversary(周年纪念)—maybethemostexcitingyearinenvironmentalhistory.Thisyear,westarttofaceandtrytoworkoutmanyenvironmentproblems. Formanypeople,climate(气候)chang...