岩石层 yánshícéng rock stratum Definitions Defs Origin Strokes Stroke Words Sentences Sents 岩石层 (岩石層) yánshícéng rock stratum Frequency Written text 0.070 per million Sources Definitions CC-CEDICT Frequency data BCC Corpus (BLCU)
岩石层 (岩石層) yánshícéng rock stratum Frequency Written text 0.070 per million Sources Definitions CC-CEDICT Frequency data BCC Corpus (BLCU)
