假如你徒步旅行要去远离路径的地方或者进入坎坷不平的地方、平衡是至关重要的上升地形，一个内部框架将提供更好的稳定性和舒适性。
If your hiking will take you off-trail or into rough, rising terrain where balance is crucial, an internal frame will offer greater stability and comfort.
所以它上升得更快，因为它无处可去，这就是地形的作用。
So it rises even faster because it has nowhere else to go, that's where topography comes into the picture.
当储层足够大时，这种炽热岩石的一个球体强行通过上地幔上升到地球表面，在地形上形成一个宽阔的隆起。
When a reservoir is sufficiently large, a sphere of this hot rock forces its way up through the upper mantle to Earth's surface, creating a broad bulge in the topography.
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