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冬天来了,外出时我们都会戴上帽子和手套,可是我们的脸呢?它好像并不需要呵护,似乎也不畏惧寒冷。这的确是个有趣的现象,可是为什么会这样呢?
When winter comes, we will wear hats and gloves when we go out, but what about our face? It does not seem to need care. It does not seem to fear the cold. This is indeed an interesting phenomenon, but why is it so?