保持器 bǎochíqì retainer Definitions Defs Origin Strokes Stroke Words Sentences Sents 保持器 bǎochíqì retainer a device used in orthodontics to keep teeth in position after braces are removed Frequency Written text 0.066 per million Sources Frequency data BCC Corpus (BLCU)
保持器 bǎochíqì retainer a device used in orthodontics to keep teeth in position after braces are removed Frequency Written text 0.066 per million Sources Frequency data BCC Corpus (BLCU)
