precambrian [priˈkæmbriən]

例句:

• Precambrian carbonate sedimentation was also occurring.
  来自SA
• 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.
  
• Two main glacial epochs affected both areas during the last 100 million years of Precambrian times.
  在前寒武纪的最后1亿年中，两个主要的冰川时期对两个地区都产生了影响。
  
• Precambrian time for as much as eighty - five percent of all geological time.
  从前寒 武 世纪以来地球地面大部分被冰川所覆盖的任何地质年代.
  
• Early complex animals of the Precambrian may have been nearly microscopic.
  来自SA
• This was the Precambrian-Cambrian boundary, six hundred million years old.
  来自NEWYORKER