Gyrocotyle

例句：

1. 1. The gyrocotyls are the main food of many animals.
   陀螺虫是许多动物的主要食物。
2. 2. The gyrocotyls are found in various parts of the world.
   陀螺虫分布在世界的许多地方。
3. 3. The gyrocotyls have a fascinating life cycle.
   陀螺虫的生命周期非常有趣。