quadruple spiral

例句：

1. 1. The quadruple spiral structure of the galaxy is fascinating to study.
   星系的四旋涡结构令人着迷。
2. 2. The quadruple spiral pattern in the ocean floor is a mystery that has puzzled scientists for decades.
   海洋底部的四旋涡模式是一个困扰科学家几十年的谜题。
3. 3. The quadruple spiral dance is a beautiful and complex choreography.
   四旋涡舞是一种美丽而复杂的编舞。