larva-chrysalis-metamorphose-caterpillar

larva
A larva metamorphose into a chrysalis and then into a butterfly.
幼虫变为蛹，然后再变成蝴蝶。
chrysalis [ˈkrɪsəlɪs]

The butterfly tries to get out of its chrysalis.
蝴蝶试图破茧而出。

metamorphose
The caterpillar will eventually metamorphose into a butterfly.
毛毛虫最终将蜕变成一只蝴蝶。  

caterpillar[ˈkætərpɪlər]

A caterpillar changed into a butterfly.
毛虫变成了蝴蝶。