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
第四紀的（迄今約250萬前至今的地質時間段，這期間現代人出現）
the Quaternary period 第四紀
Quaternary glaciation 第四紀冰川化
the Quaternary
noun [ 單數名詞 ] usYour browser doesn't support HTML5 audio
the Quaternary period
第四紀 返回 Quaternary