太阳光中的紫外线会损伤动植物(包括人类)的DNA和引起皮肤癌，而臭氧层的功能就是阻挡住这些有害的紫外线从而保护地球上的生命。
Earth's ozone layer protects life by absorbing ultraviolet light, which damages DNA in plants and animals (including humans) and leads to skin cancer.
太阳光中的紫外线会损伤动植物(包括人类)的DNA和引起皮肤癌，而臭氧层的功能就是阻挡住这些有害的紫外线从而保护地球上的生命。
Earth's ozone layer protects life by absorbing ultraviolet light, which damages DNA in plants and animals (including humans) and leads to skin cancer.
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