元古宙 Yuángǔzhòu Proterozoic Definitions Defs Origin Strokes Stroke Words Sentences Sents 元古宙 Yuángǔzhòu Proterozoic noun Proterozoic eon (geological eon from 2500 to 645 million years ago) Frequency Written text 0.038 per million Sources Definitions CC-CEDICT Frequency data BCC Corpus (BLCU)
元古宙 Yuángǔzhòu Proterozoic noun Proterozoic eon (geological eon from 2500 to 645 million years ago) Frequency Written text 0.038 per million Sources Definitions CC-CEDICT Frequency data BCC Corpus (BLCU)
