英语听力:探索发现 2014-07-02 BBC 地平线:陨石的真相-22(在线收听

 Look at the size of this! This is magnificent! That is beautiful. This cave may be stunning, but it provides the evidence for one of the greatest catastrophes in the Earth’s history. And that water, it’s so clear! Lower the gear, please!

 
There’s actually much more to this amazing cavern than first meets the eye. But to understand the scale of what happened here, you have to go deeper still. Underwater.
 
I’m not sure if I’m ready for this. I’ve got all the equipment, but there’s something about going down into water when you’re not quite sure where your exit is. But I trust Bernadette completely here. She knows what she’s doing. So I’m as ready as I’ll ever be. 
 
Ready?
 
All right. 
 
Descending into the depths of the cenote is like entering a new world. Fewer people have visited some of these drowned caverns than the surface of the moon. 
  原文地址:http://www.tingroom.com/lesson/yytltsfx/2014/273552.html