奥陶纪 àotáojì Ordovician Definitions Defs Origin Strokes Stroke Words Sentences Sents 奥陶纪 (奧陶紀) àotáojì Ordovician time word Ordovician (geological period 495-440m years ago) Frequency Written text 0.091 per million Sources Definitions CC-CEDICT Frequency data BCC Corpus (BLCU)
奥陶纪 (奧陶紀) àotáojì Ordovician time word Ordovician (geological period 495-440m years ago) Frequency Written text 0.091 per million Sources Definitions CC-CEDICT Frequency data BCC Corpus (BLCU)
