词汇	貞道
释义	貞道 zhēn dào正道。
随便看	retraction stroke retraction syndrome Retraction Syndromes,Ocular retraction valve retraction volume retraction volume of delivery valve retractive retractive force retractive foree retractively retractiveness retractive pruning retractives retractive stress retractor retractor actuator retractor analis muscle retractor and elevetor for metacarpus retractor angularum oris retractor angulis oris retractor angulorum oris retractor blade retractor clamp retractor collar retractor device