The source of much of this chlorine is chlorofluorocarbons (CFCs) that were widely used in many products over the last century.

氯的来源是来自于含氯氟烃，这个物质我们在上个世纪中用于多种产品里面。

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Our use of ozone-depleting substances such as chlorofluorocarbons (CFCs) had torn a hole in the ozone layer that protects us from the sun's harmful ultraviolet radiation.

我们使用的氯氟化碳等臭氧消耗物质将保护我们免受有害的太阳紫外线辐射的臭氧层撕裂出一个空洞。

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Many old fridges contain chemicals called Chlorofluorocarbons (CFCs) which damage the Earth's ozone layer.

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Polychlorinated biphenyls, (PCBs), chlorofluorocarbons (CFCs) and DDT are also organochlorine compounds which, although banned or discredited, are still evident in the environment.

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Those gases originate from man-made products like chlorofluorocarbons, or CFCs, which were phased out under a global agreement two decades ago but continue to linger in the atmosphere.

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