单词：Archean
音标：[ɑ:'ki:әn] ；
n. 太古代
a. 太古代的
a. 太古代的
n. the time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life
s. of or relating to the earliest known rocks formed during the Precambrian Eon
s. of or relating to the earliest known rocks formed during the Precambrian Eon
词型变化：名词复数形式 : archeans
Archean的用法和样例：
例句
用作形容词(adj.)
- On seeing the rocks for himself, Fedo, who had just spent a year mapping Archean rocks in Zimbabwe, became extremely skeptical.另一方面，费多由于才刚在辛巴威花了一年时间测定太古代的岩石，现在他亲眼看见这里的岩石，立刻感到非常怀疑。
词汇搭配
- Archaean太古代的
- the archean太古代
【近义词】
- archaeozoic太古代
- Archeozoic始生代
- Archaean太古代的