触毛

例句：

1. 1. The caterpillar has a tummy full of vellum, which is the kind of hair that makes upthe fur on a cat's body.
   毛毛虫肚子里满是绒毛，这是构成猫身体毛发的触毛。
2. 2. Caterpillars are one of the most common species of insect.
   毛毛虫是昆虫中最常见的种类之一。
3. 3. The caterpillar's hair is used to protect it from predators and to help it climb trees.
   毛毛虫的毛发用来保护它免受捕食者的伤害，并帮助它爬树。