carbon footprintppt
carbonfootprint
green carbon footprint
anintroductiontoacarbonfootprint低碳方面碳足迹的介绍
图片内容是:carbonfootprint
carbon footprint poster: play on words
small carbon footprint sleep guarantee
碳足迹 carbon footprint低碳生活方式(low-carbon lifestyle)代表
碳足迹标签(carbon footprint label),又称碳标签(carbonlabel)或碳
gocompare - calculate your carbon footprint