鼻孔大小等因素随着温度和湿度的变化而变化，这种事表明进化在起作用。
Things such as nostril size vary with temperature and humidity in ways that suggest evolution is at work.
湿度也起到了很大的作用，因为它不阻碍了汗液的挥发。
Humidity plays a large role, too, since it doesn't allow sweat to evaporate.
冰川是巨大的长期存在的冰体，除了气候和湿度变化以外，海拔对冰川的寿命也起了关键性的作用。
Apart from climate change and humidity, elevation also appears to play a critical role in the lifespan of glaciers, which are large persistent bodies of ice.
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