The caterpillar has metamorphosed into a butterfly
蝎已变成蝴蝶。

The ugly caterpillar will change into a beautiful butterfly
丑陋的毛虫会变成美丽的蝴蝶。

A caterpillar is the larva of a butterfly
毛虫是蝴蝶的幼体.

A butterfly is produced by metamorphosis from a caterpillar
蝴蝶是由毛虫脱胎变成的。

A lightly armored military motor vehicle, with caterpillar treads in place of wheels
半履带式车辆一种轻型装甲军用机动车辆，由履带代替轮子驱动

A caterpillar must pass through the cocoon stage to become a butterfly
毛毛虫必须经过茧的阶段才能变成蝴蝶。