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virulent + noun
virulent 常修饰疾病、病毒等，表示毒性强、危害大。
The virulent disease spread quickly through the population.
这种剧毒的疾病在人群中迅速传播。
恶性的；致命的
先理解核心含义，再看它在真实句子里的用法。
恶性的；致命的
of a disease or pathogen: severe and able to cause serious damage to the body
The virulent disease spread quickly through the population.
这种剧毒的疾病在人群中迅速传播。
(动物、植物或物质)极毒的,剧毒的。
Of animals, plants, or substances: extremely venomous or poisonous.
极为敌视或恶意的；充满敌意的,恶毒的。
Extremely hostile or malicious; intensely acrimonious.
(疾病或致病因子)恶性的,能对宿主造成损害的。
Of a disease or disease-causing agent: malignant, able to cause damage to the host.
(病原体)在宿主细胞内复制后立即导致其裂解的。
Of a pathogen: replicating within its host cell, then immediately causing it to undergo lysis.
The new strain of the virus proved highly virulent, spreading through the town within days.
这种新型病毒株被证明毒性极强，几天内就传遍了整个城镇。
Doctors warned that the virulent infection could be fatal without immediate treatment.
医生警告说，这种恶性感染如果不立即治疗可能是致命的。
The disease becomes more virulent in crowded conditions, so quarantine is essential.
这种疾病在拥挤的环境下会变得更具毒力，因此隔离至关重要。
virulent 常修饰疾病、病毒等，表示毒性强、危害大。
The virulent disease spread quickly through the population.
这种剧毒的疾病在人群中迅速传播。
作表语时强调主语的性质。
The strain of the virus is extremely virulent.
这种病毒株毒性极强。
表示言语或行为上的恶意，常与 attack, criticism 连用。
He launched a virulent attack against his political opponents.
他对政敌发起了恶毒的攻击。
Not this
The disease is very viral.
Use this
The disease is very virulent.
中国学习者常将“viral”（病毒的）与“virulent”（剧毒的/致命的）混淆。表示疾病严重或传染性强时应用“virulent”。
Not this
The virulent of the virus is high.
Use this
The virulence of the virus is high.
“virulent”是形容词，不能用作名词。其名词形式为“virulence”，表示毒性或致病力。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
强毒株；毒性强的毒株
A virulent strain of the virus has spread across the country.
一种强毒株病毒已在全国蔓延。
恶性疾病；致命疾病
The virulent disease killed thousands before a vaccine was developed.
在疫苗研制成功之前，这种恶性疾病已导致数千人死亡。
严重感染；恶性感染
She developed a virulent infection after the surgery.
手术后她出现了严重的感染。
恶毒的攻击；猛烈抨击
The newspaper printed a virulent attack on the mayor.
这家报纸刊登了一篇对市长的恶毒攻击文章。
剧毒物质；烈性毒药
The plant produces a virulent poison that affects the nervous system.
这种植物会产生一种影响神经系统的剧毒物质。
Use virulent naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 virus（病毒）想成 viru，再把毒力 lent（借出）：剧毒、恶毒、恶性，都带毒。
语域：formal 常见场景：medical/biological writing、editorial or political commentary、literary criticism virulent 通常在较正式或专业的语境中使用，多用于医学、生物学文本以表示“恶性的、剧毒的”，也常见于社论或文学评论中表示“恶毒的、充满敌意的”。日常口语中比较少见。
常作定语，修饰名词，如 virulent disease/strain/attack
Dictionary facts from ECDICT, WIKTIONARY.