无节幼体

例句：

1. 1. The larval stage of the caterpillar is known as a pupa.
   蝴蝶的幼虫阶段被称为蛹。
2. 2. During the metamorphosis, the larvae transform into adults.
   在变态过程中，幼虫变成成虫。
3. 3. The larvae feed on plant matter and grow to become adult butterflies.
   幼虫以植物物质为食，长大后成为成蝶。