Holothuroidea

例句：

1. 1.The holothuroidea is a fascinating creature that has been studied for centuries.
   这个生物是令人着迷的，已经被研究了几个世纪了。
2. 2.The holothuroidea is a fascinating creature that has been studied for centuries.
   这个生物是令人着迷的，已经被研究了几个世纪了。
3. 3. The holothuroidea is a fascinating creature that has been studied for centuries.
   这个生物是令人着迷的，已经被研究了几个世纪了。