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connected with the scientific study of the physical structure of the earth, including the origin and history of the rocks and soil of which the earth is made 地质学 geological sciences 地质科学
connected with the origin and history of the rocks and soil of a particular area （某地区的）地质 a geological survey 地质勘察 the vast span of geological time (= the whole of time since the earth began) 广阔的地质时间