flowing down the valley with unstoppable force. 一刻不停地刨蚀着深谷
They're the most powerful erosive force on our planet. 它是地球上最大的侵蚀作用
A moulin - a shaft in the ice opened by melt water as it plunges into the depths of the glacier. 冰川瓯穴——由冰融水凿成的 直达冰川深处的圆筒状竖井
grind their way down the mountains, 碾磨出一座座尖峭的山峰
Mont Blanc - the highest peak in Western Europe. 勃朗峰——西欧最高的山峰
The distinctive jagged shapes of the Alps 阿尔卑斯山峰具有与众不同的尖齿状外形
The range at its centre rises to 3 miles high 山脉中心地带的山峰伫立高达3英里
The Alps were raised some 15 million years ago 阿尔卑斯山崛起于1500万年前