基本解释adj.预防性的n.预防法=preventive.同根派生 英汉例句用作形容词 (adj.)We have to take preventative measures.我们不得不采取预防措施。Preventative measures are always better than huge vet bill later.预防性的检查治疗,永远比以后昂贵的诊疗费用要好。