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1·The phasing out of chlorofluorocarbons (CFC) - substances used in refrigerators, aerosol sprays and some packing foams - has stopped the ozone layer from being depleted further.

由于氟氯化碳(CFC，冰箱、气溶胶喷雾和一些包装泡沫使用的一种物质)被逐渐淘汰，有效阻止了臭氧层进一步损耗。

2·Tetrachloride carbon (CTC) is an ozone depleting substance (ODS). It is mainly used as feedstock of chlorofluorocarbons (CFC), chemical process agent and cleaning solvent.

四氯化碳(CTC)是一种破坏臭氧层的物质(ods)，主要用作氟氯烃(氟里昂)的生产原料、化工过程助剂和清洗剂。