如果你生活在一个一年四季气候不变的地方，那么你很幸运。因为炎热的夏季和寒冷的冬季需要完全不同的护肤方法。

If you live in a place with consistent year-round weather, you're lucky, because living in a temperate zone with hot summers and cold winters calls for two different skincare regimens.

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换句话说，如果护肤公司希望在宣传中拿科技说事，那么运用科学方法之时也理当严谨。

If skin-care companies want to use the language of science, in other words, they ought to be rigorous about applying its methods, too.

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这些研究提出了很多平复皱纹的方法，也提供了几种可以用来测试化妆品公司所声称的护肤品功效的办法。

As well as throwing up ways to smooth away wrinkles, the studies may provide a quantifiable way to test claims made for skin products.

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