Liesegang rings

例句：

1. 1. The Lieseganger rings are a popular tourist attraction in the city.
   莱塞根环是该市一个受欢迎的旅游景点。
2. 2. The Lieseganger rings were created by an artist who was inspired by nature.
   莱塞根环是由一位受到自然启发的艺术家创造的。
3. 3.The Lieseganger rings have been used for centuries as a symbol of love and devotion.
   莱塞根环作为爱情和奉献的象征，已经被使用了几个世纪了。