spheric shape cocoon

例句：

1. 1.The spider spun a spherical shape cocoon to protect its eggs.
   蜘蛛织了一个球体形状的茧来保护它的卵。
2. 2. The caterpillar's transformation into a butterfly is a fascinating process.
   毛毛虫变成蝴蝶的过程令人着迷。
3. 3. The cocoon serves as a protective shell for the developing caterpillar.
   这个茧是正在发育的毛毛虫的保护壳。