Word · Frequency #8627
infectious
有传染性的, 易传染的
核心释义
able to be passed from one person to another, causing infection
- 1.
由进入宿主身体的病原体(如细菌、病毒、寄生虫或朊病毒)引起的；常通过多种途径(如接触、飞沫、空气、水、食物、污染物或血液)在宿主之间传播。
Caused by an agent that enters the host's body (such as a bacterium, virus, parasite, or prion); often, also, transmitted among hosts via any of various routes (for example, contact, droplet-borne, airborne, waterborne, foodborne, fomite-borne, or bloodborne).
- 2.
能够感染他人；能传播病原体。
Able to infect others; capable of transmitting pathogens.
- 3.
迅速从一个人传播到另一个人。
Spreading quickly from one person to another.
由进入宿主身体的病原体(如细菌、病毒、寄生虫或朊病毒)引起的；常通过多种途径(如接触、飞沫、空气、水、食物、污染物或血液)在宿主之间传播。；能够感染他人；能传播病原体。；迅速从一个人传播到另一个人。；有传染性的；易传染的；[医] 传染性的
用法In use
Her laughter was so infectious that everyone in the room started laughing.
用法提示：infectious 在此句中表示『有感染力的』，形容笑声容易传播。
The doctor warned that the disease is highly infectious and spreads through droplets.
用法提示：infectious 表示『传染性的』，用于描述疾病容易传播的特性。
His infectious enthusiasm motivated the whole team to work harder.
用法提示：infectious 形容热情具有感染力，能影响他人。
be infectious
表示具有传染性。
The virus is highly infectious.
这种病毒传染性很强。
infectious disease
作定语修饰疾病。
相关词与表达Connections
搭配Collocations
- infectious disease
- 传染病
- Vaccination helps prevent the spread of infectious diseases.疫苗接种有助于防止传染病的传播。
- infectious laughter
- 有感染力的笑声
- Her infectious laughter filled the room.她有感染力的笑声充满了房间。
- infectious smile
- 有感染力的微笑
- He greeted everyone with an infectious smile.他带着有感染力的微笑和每个人打招呼。
- infectious enthusiasm
- 有感染力的热情
- The coach's infectious enthusiasm motivated the team.教练有感染力的热情激励了队伍。
- infectious agent
学习提示Learner notes
记忆技巧Memory Tip
infect + ious = 病菌扩散，极易传染。
语境与语域Context & Register
语域：mixed 常见场景：医学、日常比喻 通常用于医学领域描述疾病传染性，也常见于比喻用法（如笑声、热情等具有感染力），两者均较常见。
语法说明Grammar Note
通常用于描述疾病或情绪等具有传染性的特质，可直接修饰名词或作表语。
发音与拼写Pronunciation & Spelling
All listed words end in -ious and share the same pronunciation /ʃəs/ in the final syllable, rhyming with infectious. Note that some -ious words (e.g., curious /ˈkjʊriəs/) have a different ending sound.
高价值词汇High-value vocabulary
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
用法优先级
Dictionary facts from ECDICT, WIKTIONARY.