Trichocephalata

例句：

1. 1.The caterpillar's head is the first part of its body to grow.
   毛毛虫的头部是它身体的第一个部分开始生长的地方。
2. 2. The spider's web is made up of many small threads that form a complex network.
   蜘蛛网由许多细小的线组成，形成了一个复杂的网络。
3. 3. The butterfly's wings are designed to help it fly and spread its wings in flight.
   蝴蝶的翅膀设计用来帮助它飞行，并在飞行中展开翅膀。