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So far, only a fraction of China's caves have been thoroughly prospected and cavers are constantly discovering new subterranean marvels, many of which are subsequently developed into commercial show caves.
迄今为止被探索发掘的中国洞穴是中国大地上的九牛一毛，而被发掘的洞穴不断为我们展现地底奇观，许多在后来被开发成了商业景点。
Finally escaping the darkness, the cave river and its human explorers emerge in a valley far from where their journey began.
探索者沿着洞穴河流出山谷的轨迹逃离了黑暗，出现在远离出发地的河谷。
For now, the adventure is over. Rivers which issue from caves are the key to survival in the karst country.
这场冒险拉上了帷幕。源自洞穴河流为喀斯特地区提供了生命之泉。
This vertical gorge in Guizhou Province is a focal point for the region's wildlife.
贵州的垂直峡谷成为了当地野生动物的密集焦点。
