precambrian的翻译，读音

例句

Rapakivi is a special rock in precambrian. 环斑花岗岩是发育于前寒武纪的一种特殊岩石. 。

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. 。

precambrian geology is one of the major research fields of earth sciences. 前寒武纪地质学是地球科学的主要研究领域之一。

precambrian time accounts for as much as eighty - five percent of all geological time. 前寒武纪占据了整个地质年代的百分之85. 。

Among them the precambrian and Cenozoic eras are the main metallogenic epoches in the world. 就全球而言,前寒武纪和新生代是金矿的重要成矿期. 。