Geologists care about sediments, hammering away at them to uncover what they have to say about the past-especially the huge spans of time as the Earth passes from one geological period to another.
地质学家关注沉积物，通过它们地质学家可以揭示过去，特别是在地球从一个地质年代跨越到另一个地质年代时那些巨大的时间跨度。
Geologists care about sediments, hammering away at them to uncover what they have to say about the past-especially the huge spans of time as the Earth passes from one geological period to another.
地质学家关心泥沙，潜心研究以揭示过去——尤其是当地球从一个地质时期到另外一个地质时期这种巨大跨度时，地球究竟发生了什么。
Geologists care about sediments, hammering away at them to uncover what they have to say about the past-especially the huge spans of time as the Earth passes from one geological period to another.
地质学家关心泥沙，潜心研究以揭示过去——尤其是当地球从一个地质时期到另外一个地质时期这种巨大跨度时，地球究竟发生了什么。
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