After being absorbed, the particles of water unite and form clouds; then they fall down in the form of fog, rain, snow, or hail.
原来，水分被空气吸收以后，空气中的水分子就会积聚成云，然后它们会变成雨，变成雪，变成冰雹降落下来。
Groups of frozen water droplets are called snow pellets. Under some conditions, these particles may grow larger and form solid pieces of ice, or hail.
一群冰冻的水滴被称为雪雹。在一些条件下，这些粒子可能变大，形成实心的冰粒，或者冰雹。
The annual variation appears a tri-peak form in the curve of dekad- or pentad-hail days evolution.
从旬或候雹日演变看，冰雹年变化具有三峰型；
The annual variation appears a tri-peak form in the curve of dekad- or pentad-hail days evolution.
从旬或候雹日演变看，冰雹年变化具有三峰型；
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