听力原文

Rickett's mouse-eared bat is the only bat in Asia which specialises in catching fishes, tracking them down from the sound reflection of ripples on the water surface.
Rickett鼠耳蝠是亚洲蝙蝠中唯一通过在水面依靠声波对涟漪的反射追踪游鱼的蝙蝠种。
This extraordinary behaviour was only discovered in the last couple of years, and has never been filmed before.
这种非凡的技巧仅在数年前被发现，现在首次被记录下来展示给世人。
If catching fish in the dark is impressive, imagine eating a slippery minnow with no hands while hanging upside down.
如果说在黑暗中追捕游鱼是如此的不可思议，想象下倒挂状态下不用爪子吞食滑溜溜的米诺鱼是怎样的神奇场景。

重点讲解

重点讲解：
1. specialise in
专门从事；专门经营；专门研究；专攻；
eg. Most of the staff specialise in the care of children.
多数员工都掌握专业的儿童保育知识。
eg. As you know, we specialise in electronic games.
正如你们多了解的，我们专门经营电子游戏。
2. track down
追踪到；追查到；搜寻到；
eg. It took the police several days to track down their quarry.
警方用了几天时间追查到案中目标。
eg. He was determined to track down the cause of food spoilage.
他决心查出食品腐烂的原因。
3. upside down
倒置地；颠倒过来；
eg. The painting is upside down.
图画颠倒了。
eg. Tony had an upside-down map of Britain on his wall.
托尼的墙上倒挂了一张英国地图。