that we've come to appreciate the full significance and scale of these flooded passageways. 我们才能完全了解 这些地下水道的重要性及其规模
These flooded shafts are the region's only source of open fresh water. 这些水潭是整个地区 唯一的露天淡水资源
Structures like these in North America's Carlsbad Cavern 北美洲卡尔斯巴德溶洞中的这些构造
These flooded caves in Mexico have remained virtually unchanged for thousands of years. 墨西哥的这些水洞 几千年来几乎保持不变
These Bornean caves are among the biggest in the world 婆罗洲的这些洞窟是世界上最大的洞穴
These birds are unusual for another reason. 这些鸟之所以特别还有另外一个原因
Bats are not the only commuters in these Bornean caves. 蝙蝠并非婆罗洲洞窟中的唯一常客
these commuters rely on their loud clicks to find their way through the cave passages in total darkness. 这些住客利用它们响亮的叫声 在漆黑一片的洞穴通道内辨别方向
All these animals spend their entire lives within the cave. 所有这些动物都在洞穴内度过一生
These in turn become food for giant cave centipedes, 这些蟑螂也接连成为了 洞穴大蚰蜒的美餐