宝宝从匍匐到手膝爬行:请问 溶洞 用英语怎么说
来源:百度文库 编辑:中科新闻网 时间:2024/05/17 21:02:41
dissovle hole
Dissolve hole
water-eroded cave
limestone caves
karst caves
Cave with stalactites and stalagmites
dissovle hole
Dissolve hole
water-eroded cave
limestone caves
karst caves
Cave with stalactites and stalagmites