pentacotyl

例句：

1. 1. The pentagon is a geometric figure with five sides.
   五角星是一个有五个边的几何图形。
2. 2.The pentagram is often used in divination and magic.
   五角星常用于占卜和魔法中。
3. 3.The starry sky above the city was breathtakingly beautiful.
   城市上空繁星点点的夜空美丽得令人惊叹。