virulentadj.有毒的；有恶意的；充满敌意的virulent live vaccine毒性活菌苗virulent Biopsy Virus活组织检查virulent encephalitis心肌酶谱virulent criticism.恶毒的批评virulent bacteriophage烈性噬菌体virulent differentiation毒力鉴定virulent wild-type virus毒性野型病毒virulent duck plague virus鸭瘟强毒virulent duck enteritis virus鸭病毒性肠炎病毒强毒virulent and avirulent strains强弱毒株