thalli

例句：

1. 1. The ancient ruins are home to many unique stone formations.
   这些古代遗迹是许多独特石笋的家园。
2. 2.The stalactites and stalagmites are visible from the top of the hill.
   从山顶可以看到石笋和石柱。
3. 3. The stalactites and stalagmites are a natural wonder that attracts tourists from all over theworld.
   石笋和石柱是一种自然奇观，吸引了来自世界各地的游客。