virusn.病毒；病原体
virtuousadj.有品德的；有德行的；贞洁的
virulentlyadv.剧毒地
virulent bug致病力强的病菌
virulent test毒力测定
virulent gene毒性基因
virulent bubo软下疳性腹股沟淋巴结炎
virulent virus裂性病毒； 强毒病毒
virulent abuse衔恨的辱骂
virulent phage烈性噬菌体
virulent smell鸦片烟香味
"venomous snakes"
"a virulent insect bite"
"an acerbic tone piercing otherwise flowery prose"
"a barrage of acid comments"
"her acrid remarks make her many enemies"
"bitter words"
"blistering criticism"
"caustic jokes about political assassination, talk-show hosts and medical ethics"
"a sulfurous denunciation"
"a vitriolic critique"
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