chilarium

例句：

1. 1. The chilarium is a small, circular structure that houses the spider's webbing.
   这个小圆顶是蜘蛛网的家。
2. 2. The chilarium is an important part of the spider's life cycle.
   这个小圆顶是蜘蛛生命周期中的一个重要部分。
3. 3. The chilarium contains a variety of chemicals that are essential for the spider's survival.
   这个小圆顶含有多种化学物质，对蜘蛛的生存至关重要。