托福tpo35听力lecture4 Permian Extinction原文解析+翻译音频

But can't researchers figure that out by studying the rocks there in Wilkes Land

And the spot where the gravity readings are especially high

gravity readings 重力数据

 

When an asteroid hits Earth, when it slams into Earth's crust, we think that causes molten rock from deep below the surface to rise up into the impact area.

slams into 猛击

 

That's just for mass concentration.

short 缩写