刚毛一般的

例句：

1. 1. The caterpillar has a long, stiff quill that helps it crawl.
   毛毛虫有一条长长的硬毛，帮助它爬行。
2. 2. The scientist used a microscope to observe the tiny quills of the butterfly.
   科学家用显微镜观察蝴蝶的细小刚毛。
3. 3. The caterpillar's quill is used for defense against predators.
   毛毛虫的刚毛用于防御捕食者。