limes convergens

例句：

1. 1. The constructionsite was covered in a layer of freshlimestone dust.
   施工现场覆盖着一层新鲜的石灰石粉尘。
2. 2. The limestone formationsare visible from the hiking trail.
   从徒步小径可以看到石灰石形成的地貌。
3. 3. Thelimestone quarry is one ofthe largest in the region.
   石灰石采石场是该地区最大的之一。