They ignored the erosion of the mountain by the volcanic ash!
他们忽视了山体被火山灰腐蚀的迹象！
2
"What we show is that, once the mountain is pushed up across the snow line, a very effective erosion agent comes into play and that is represented by glaciers," said Egholm.
我们想揭示的就是，一旦山峰被抬高并越过雪线，以冰川为代表的十分明显的侵蚀作用就开始活跃起来。
3
Environmental scientists need GIS software to model erosion in coastal areas and mountain valleys.