第四纪 dìsìjì Quaternary Period Definitions Defs Origin Strokes Stroke Words Sentences Sents 第四纪 第四紀 dìsìjì Quaternary Period The Quaternary Period; the current and most recent of the three periods of the Cenozoic Era, spanning from about 2.6 million years ago to the present. Frequency Written text 0.417 per million Sources Frequency data BCC Corpus (BLCU)
第四纪 第四紀 dìsìjì Quaternary Period The Quaternary Period; the current and most recent of the three periods of the Cenozoic Era, spanning from about 2.6 million years ago to the present. Frequency Written text 0.417 per million Sources Frequency data BCC Corpus (BLCU)
