symmetrical ring

例句：

1. 1. The design of thissymmetrical ring is very elegant.
   这个对称环的设计非常优雅。
2. 2. Thesymmetry ring in the centerof the table is a symbolof good luck.
   桌子中心的对称环是好运的象征。
3. 3. The artist crafted asymmetrical ring for his wife on theirwedding day.
   艺术家在他们的婚礼当天为妻子制作了一个对称环。