Energy conservation and environment-friendly products area: Energy conservation products, water-saving products, public sanitation and sewerage products and equipment, environment-friendly products etc.是什么意思_Energy conservation and environment-friendly products area: Energy conservation products, water-saving products, public sanitation and sewerage products and equipment, environment-friendly products etc.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句