axisdentatasecond cervical vertebra第二: second颈椎: cervical vertebra项结节,第二颈椎棘突: nuchal bone第二颈椎闭合性脱位: closed dislocation of second cervical vertebra第二颈椎开放性脱位: open dislocation of second cervical vertebra下载手机词典可随时随地查词查翻译