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。
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。
Apollo astronauts used seismometers during their visits to the Moon and discovered that the gray orb isn't a totally dead place, geologically speaking.
阿波罗航天飞船的宇航员们登月时使用地震检波器发现：这个灰色的星球，从地质学角度上讲，并不完全是一个死气沉沉的地方。
Generally speaking, the interiors of plates are geologically uneventful.
一般来说，板块的内部在地质上是平静的。
Generally speaking, the interiors of plates are geologically uneventful.
一般来说，板块的内部在地质上是平静的。
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