帝王蝶是动物界中最美丽的生物之一。

The monarch butterfly is one of the most beautiful creatures in ___the ___animal ___kingdom.

保护自然栖息地对动物界至关重要。

Preserving natural habitats is of paramount importance for ___the ___animal ___kingdom.

植物界包含从藻类到开花植物的众多物种。

___The ___plant ___kingdom encompasses a vast array of species, from algae to flowering plants.