A sundog is another atmospheric optical phenomenon caused by the refraction of sunlight by tiny ice crystals in clouds.
幻日是阳光通过云层中微小冰晶的折射而造成的另一种大气光学现象。
Binary ice is a kind of muddy mixture of very tiny ice crystals and glycol solution, so it is called ice slurry as well.
二元冰是极细小的冰晶与乙二醇水溶液形成的泥浆状混合物，所以也称之为冰浆。
This fairly common sight occurs when high thin clouds containing millions of tiny ice crystals cover much of the sky. Each ice crystal ACTS like a miniature lens.
这种相当常见的气象景象之所以会出现，是因为覆盖广大天空的高层薄云中含有数以百万计的小冰晶，而每一个冰晶的作用就像是小型的棱镜。
Although some so-called contrails, which are simply clouds of tiny ice crystals condensed from the moisture in aircraft exhaust, evaporate quickly, many linger for hours and spread across the sky.
这些所谓的“飞行云”不过是飞机尾气中的湿气冷凝而成的云状微型冰晶颗粒，尽管其中有些会很快蒸发，但是很多会逗留数小时，并弥漫天空。
Snow is a form of frozen water. It contains many groups of tiny ice particles called snow crystals. These crystals grow from water particles in cold clouds.
雪是由冻水形成，包含大量细小冰粒的冻水被称作雪晶，这些晶体由寒冷云层中的小水滴形成。
Then he began to blow his breath into the freezer and drop large pieces of dry ice through it to create crystals which became a tiny snowstorm falling slowly to the floor of his laboratory.
然后，他开始向冷冻机里面呼气，并对着呼出来的气投入大块干冰来制造结晶，这些结晶形成一场小雪暴 ，缓缓落在实验室的地面上。
Collectively, the faces of all the tiny airborne ice crystals act as a giant concave mirror.
总的来说，所有微小的空中冰晶的面孔扮作一块巨大的凹镜。
Collectively, the faces of all the tiny airborne ice crystals act as a giant concave mirror.
总的来说，所有微小的空中冰晶的面孔扮作一块巨大的凹镜。
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