pentyne

例句：

1. 1. The shape of the pentagram is unique and fascinating.
   五角星的形状独特且引人入胜。
2. 2.The construction of the pentagram is a challenge for engineers.
   建造五角星对工程师来说是一大挑战。
3. 3.The pentagram is often used in religious ceremonies to symbolize unity.
   五角星常在宗教仪式中被用来象征团结。