preventiveadj.预防的；防病的n.预防物；预防性措施preventive methods防治方法Preventive dentist预防牙科医生preventive therapy预防疗法preventive custody预防性看押Preventive tactics预防策略preventive capital防护成本法preventive savings预防性储蓄preventive stratum预防层preventive eugerics预防优生学Preventive standard预防标准