单词	先約
释义	先約1. to preengage
随便看	ptosis adiposa ptosis atrophica ptosis lipomatosia ptosis of kidney ptosis sympathica ptotic ptototype mineral p&t {partitioning and transmutation} pt {penetrating testing} ptpn pt (pressure transimitter or potential transformer) ptr ptr. ptrc ptrc--paper tape reader control p-tree p.tremula l.var.davidiana(dode)schneid. p.tridactyla(wallroth)de bary p.tridactyla(wallroth)de bary--polosphaera oxycanthae(dc.)de bary. p. triloba miq. p. triloba miq.--pastinaca palmata maxim pts pts. ptsd ptsd(posttraumatic stress disorder)