preventiveadj.预防的；防病的n.预防物；预防性措施preventive medication预防用药preventive antibiotic预防性抗生素preventive leukotaxis预防性白细胞疗法preventive psychiatry预防精神病学Preventive treatments防治preventive technology预防技术preventivemaintenance预防性养护preventive management事前预防管理preventive health care预防性医疗保健, 预防性保健preventive preparation预防药品