Quaternary
剑桥词典
- from or referring to the period of time from about 2.5 million years ago to the present , in which modern humans appeared
第四纪的（迄今约250万前至今的地质时间段，这期间现代人出现）
the Quaternary period 第四纪
Quaternary glaciation 第四纪冰川化
the Quaternary
noun [ 单数名词 ] usYour browser doesn't support HTML5 audio
the Quaternary period
第四纪 返回 Quaternary