A cave bat, which regularly lives on a hard stone ceiling, is more careful about its landing preparation than a bat more accustomed to landing in leafy treetops.

洞穴蝙蝠通常生活在坚硬的石头天花板上，它比习惯降落在枝叶繁茂的树梢上的蝙蝠要更小心地做好着陆准备。

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Anyway, as I were saying, by analyzing these echoes, the bat can determine, say, if there is wall in a cave that it needs to avoid, and how far away it is.

总之，就像我刚才讲的，通过分析这些回声，蝙蝠可以确定，比如说，洞穴里是否有需要避开的墙壁，以及它的距离有多远。

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Mexican free-tailed bats spiral out of Eckert James River bat Cave Preserve in Texas at dusk.

黄昏时刻，墨西哥的无尾蝙蝠从德克萨斯州艾克特·詹姆士河蝙蝠洞自然保护区盘旋而出。

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Yet once he had enough paths built to welcome visitors, no one seemed interested in his "bat cave."

VOA: special.2009.12.07

Then,toward morning, they return to the bat cave within Carlsbad Cavern.

VOA: special.2009.12.07

Like some Cold War bat cave, it was accessible only by a reinforced lift shaft concealed within the false front of a seemingly ordinary building.

BBC: Remnants of Russia��s past

Follow founder George Davison III inside, though, and, as he pushes a button, a bookshelf in a large showroom slides open to reveal not a Bat Cave, but 60, 000 square feet of fantasyland.

FORBES: Inside InventionLand

It was like a bat-cave inside, and was located in the Pearl Continental hotel.

BBC: Welcome to Abbottabad