绿色环保的英语演讲稿
As we all know, the challenge and opportunity always, confused with hope, in the , is also twin hun facing challenges period. special perfornce in this ect of the relation between n and nature. hun deforestation, blind development farming, daging the vegetation, causes soil erosion, desertification, any natural resources, ke the underground mining mineral deposits in the increasingly exhausted, wastewater and waste, exhaust gas emission, ke continuous natural environment seriously det ...