A lake inside a dead volcano, white mountain peaks, lava fields that looked like the face of the moon.
还有的是死火山山顶的湖泊，白色的山峰映着象月球表面一样的熔岩地貌。
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。
There's a general impression that the moon is geologically dead, that anything of significance that happened geologically up there happened billions of years ago.
普遍认为月球无任何地质活动，任何有意义的地质学变化结束于数十亿年前，而这些年轻的裂谷证明了事实并非如此。
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