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。
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.
然而，也不能因此就认为欧元区具有刚性价格：在其有记录的价格变动中，40%以上的是大幅降价，这和对美国的估计没什么两样。
Nevertheless, Europe is far from rigid: more than 40% of the price changes recorded were cuts, much the same as estimates for the United States.
欧洲的经济学家们发现，欧元区的零售价每四到五个季度才变动一次。
The European economists found that retail prices change every four or five quarters.
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