If a stratum of air saturated with moisture meets a very cold one, the fog begins to freeze, and becomes specks of snow.
如果含水量达到饱和状态的空气遇到了非常冷的另一团空气，空气中的原先呈雾状的水分就开始凝结变成小的雪粒。
Triton 's fountains of youth are thought to be volcanoes that erupt a cold lava of water and liquid ammonia, which freeze to cover the surface with fresh ice and erase the signs of age.
特里同上年轻的喷泉被认为是在过去喷发低温岩浆和液态氨的火山，这些岩浆和液态氨结成冰包裹表面，抹掉了年龄的印记。
The aging of concrete dam located on the regions with cold climate is characterized by resorption, destroyed by freeze-thaw and frozen-heave, scouring and etc. , but the carbonized depth is low.
寒冷地区混凝土坝老化主要表现在溶蚀、冻融和冻胀破坏、冲刷破坏等，其碳化深度不大。
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