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
by the morning the vast majority will be back in the safety of the cave. 到了早上 大多数蝙蝠 仍会安然无恙地回到洞中
three million bats leave the safety of the cave 300万只蝙蝠一起离开安全的洞穴
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
which spend part of their day resting on cave walls. 它们一天大部分时间都呆在洞壁上