cambrian period

cambrian period 基本解释

[机] 寒武纪

词组短语

1、cambrian period facts 寒武纪事实

cambrian period 用法和例句

1、Cambrian period Cambrian explosion and the Chengjiang fauna

寒武纪爆发与澄江动物群

2、The last event marks the beginning of the Cambrian period.

最近的一个事件标志着寒武纪的开始。

3、It was originally defined as the era that predated the emergence of life in the Cambrian period.

最初被定义为寒武纪生命出现前的纪元。

4、During the Cambrian period, 500 million years ago, wormlike creatures were evolving into fishlike creatures.

在5亿年前的寒武纪, 似蠕虫生物逐渐演化成似鱼生物。

5、AMONG the mysteries of evolution, one of the most profound is what exactly happened at the beginning of the Cambrian period.

进化悬案中，最具深远意义的是寒武纪的起源问题。

重点词汇

Cambrian a. 寒武纪的 n. 寒武纪, 威尔士人, 寒武系

period n. 时期；（一段）时间；学时；句号 adj. 具有某个时代特征的；（关于）过去某一特定历史时期的；（家具、服饰、建筑等）某一时代的