Quaternary
劍橋詞典
- 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(jì)的（迄今約250萬前至今的地質(zhì)時間段，這期間現(xiàn)代人出現(xiàn)）
the Quaternary period 第四紀(jì)
Quaternary glaciation 第四紀(jì)冰川化
the Quaternary
noun [ 單數(shù)名詞 ] usYour browser doesn't support HTML5 audio
the Quaternary period
第四紀(jì) 返回 Quaternary