At 603 meters down, we arrived at something terrifying — the deepest vertical drop inside of a cave.

在603米的深度，我们到达了一个可怕的地方——洞穴内最深的垂直落差。

What? ! Niagara Falls! Did you say that? It has a vertical drop of some 50 metres, Neil! Do you know that?

什么？！尼亚加拉瀑布！你刚刚是说了这个吗？这个瀑布的垂直高度有50米，尼尔！你知道吗？

Headcuts are vertical drops in the topography eroded by  flowing water, and they always move upstream oftentimes aggressively.

断头是地形中被流水侵蚀的垂直落差，它们总是猛烈地向上游移动。

Occupying over 5,800 acres of terrain, roughly 4,500 feet of vertical drop, and with more than 300 trails open each season, serviced by 34 lifts, Big Sky has a lot of numbers going for it.

占地超过5800英亩，大约4500英尺的垂直落差，每个季节有300多条小径开放，由34部电梯提供服务，大天空有很多人慕名而来。

Just before it reaches the head of the fall the current is divided, the left division making a vertical drop of about eighty feet in a romantic, leafy, flowery, mossy nook, while the other forms a rugged cascade.

就在它到达瀑布的源头之前，水流被分开了，左边的水流在一个浪漫、绿树成荫、鲜花盛开、长满苔藓的角落里垂直下降了大约 80 英尺，而另一个水流形成了崎岖不平的瀑布。