1. They decompose and are quickly destroyed by the weather or eaten by some other creature.
    它们腐败之后很快地风化掉, 或被别的动物吃掉.

2. They decompose and are quickly destroyed by the weather or eaten by some other creature.
    因为它们腐败之后很快就被风化掉，或被别的动物吃掉了。