什么是Ozone?

Ozone is a form of oxygen. In the earth’s stratosphere, it helps to block potentially harmful ultraviolet radiation from reaching the ground. However, at lower levels in the atmosphere (the air we breathe) it’s a product of pollution and can be dangerous. In-home air purifiers that make ozone should be avoided. Other ozone sources include items with electric motors such as vacuum cleaners and refrigerators.

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