precambrian
前寒武纪
常用释义
基本释义
- 前寒武纪
例句
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1·Although named after a site in Australia, the Ediacaran formation is worldwide in distribution and dates to Precambrian times.尽管伊迪卡拉是以澳大利亚的一处地名而命名，但伊迪卡拉沉积层却遍及世界各地，并且可追溯到前寒武纪时代。
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2·The problem with ascribing all tillites to glaciation, however, is that tillite deposits are widespread in Precambrian sediments.然而，使所有的黑土形成冰川作用的问题是，在前寒武纪沉积物中广泛分布有黑土。
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3·They are Precambrian rocks.它们是前寒武纪岩石。
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4·Precambrian animals must therefore have lived at such depths.因此，前寒武纪的动物肯定曾经生活在这么深的地方。
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5·The Precambrian stratigraphic unit has been found and mapped.发现并填绘出前寒武纪地层单元。
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6·Precambrian metamorphic rocks constituted the basin basement.盆地的基底是前寒武系变质岩。
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7·Gneiss, a metamorphic rock, can be commonly found in Precambrian areas.片麻岩，变质岩，可以发现，在常见的前寒武纪地区。
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8·These findings are not of Precambrian animals themselves, but of their tracks.发现的并不是前寒武纪的动物本身，而是它们的足迹。
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9·S.Haldane, a pioneering British geneticist, replied: “Fossil rabbits in the Precambrian era.霍尔丹，英国遗传学的先驱，他回答道：在前寒武纪的兔子化石就是了。
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10·Early - Precambrian rocks are widely exposed in Dunhuang - Beishan area, GansuProvince.甘肃敦煌-北山地区广泛出露早前寒武纪岩石。