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1. Geologically speaking, the park`s landscape was formed by two processes: mountain-building and glaciation.
地质上说，公园的景观形成了两个过程：山区建设和冰川。
2. Past reversals have taken place over a short period of time geologically speaking, 10, 000 years or so.
过去的倒转在地质学上的说法是发生在一个短的时期，大约1万年。
3. Geologically speaking, the park's landscape was formed by two processes: mountain-building and glaciation.
地质上说，公园的景观形成了两个过程：山区建设和冰川。
4. The reversal takes a relatively short amount of time, geologically speaking, only a few thousand years.
相比较而言翻转所需时间不长，地质记录表明也就几千年。
5. Past reversals have taken place over a short period of time geologically speaking, 10000 years or so.
过去的倒转在地质学上的说法是发生在一个短的时期，大约1万年。