这些冰和小岩石粒的松散集合形成了彗星。
Loose collections of these ices and small rocky particles form into comets.
当冰舌融化时，土粒和小石块就脱离冰快并沉积下来。
As the front of a glacier melts, the soil and rock particles are released from the ice and deposited.
冰晶是霰的主要来源，而且也是霰生长的主要因素。初始的霰粒主要由冰霰自动转化生成，而较少由雨滴冻结生成。
Ice crystals are the main sources of graupels, which are produced mainly by auto conversion from ice crystal to graupel and a few grow by collection of ice crystals.
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