中国黔西南地区溶洞较多，岩溶地区实施矿山工程难度大。
There distributes a great number of karst caves in southwest of Guizhou province and they bring great difficulties to mine construction.
中国黔西南地区溶洞较多，岩溶地区实施矿山工程难度大。
There distributes a great number of karst caves in southwest of Guizhou province and they bring great difficulties to mine construction.
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