討論區 MenuForum Navigation討論MembersActivity登入註冊Forum breadcrumbs - You are here:林莉老師教學討論區Post History: l daPost History: l dal da使用者簡介Post History A cave slot exploration team recently discovered a giant karst sinkhole in Leye County, so …In: Nearly 90 percent of world's karst sinkholes are in China2 年 前