When these ice pellets fall, some of them strike much smaller ice crystals in the center of the cloud.

当这些冰粒下落时，其中一些会撞到云团中心的更小的冰晶。

youdao

When these ice pellets fall, some of them strike much smaller ice crystals in the center of the cloud.

当这些冰粒下落时，其中一些会撞到云团中心的更小的冰晶。

youdao