Subsequent discoveries suggest an ozone hole may be forming in the Northern Hemisphere.

后来的发现表明北半球可能在形成一个臭氧洞。

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An ozone hole is an area of the ozone layer that is seasonally depleted of the protective gas-such as the well-known hole over Antarctica.

臭氧空洞是指臭氧层中季节性消耗保护性气体的一个区域，例如著名的南极上空的臭氧空洞。

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However, even slight changes in the meteorology of the region this month could affect the rate of depletion of ozone and how large an area the ozone hole might span.

即使这一地区在本月之内出现任何的天气变化都有可能影响臭氧含量的变动，并决定臭氧空洞将扩大多少。

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