Every ton of cement manufactured for use in concrete emits a ton of the greenhouse gas carbon dioxide (CO2) into the atmosphere.
每吨的混凝土水泥生产会向大气层排放一吨的温室气体二氧化碳。
The production of one tonne of ordinary portland cement emit one tonne of carbon dioxide, and the production of one ton of cement calera green it will consume half a ton of carbon dioxide.
生产一吨普通硅酸盐水泥会排放出一吨二氧化碳，而生产一吨卡莱拉绿色水泥反而会消耗掉半吨二氧化碳。
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