乳突窦 rǔtūdòu mastoid antrum Definitions Defs Origin Strokes Stroke Words Sentences Sents 乳突窦 乳突竇 rǔtūdòu mastoid antrum mastoid antrum; the air space in the mastoid bone behind the middle ear Frequency Written text 0.004 per million Sources Frequency data BCC Corpus (BLCU)
乳突窦 乳突竇 rǔtūdòu mastoid antrum mastoid antrum; the air space in the mastoid bone behind the middle ear Frequency Written text 0.004 per million Sources Frequency data BCC Corpus (BLCU)
