opportunistic
UK/ɒpətjuː'nɪstɪk/US/.ɒpәtju:'nistik/
C2
释义
adj.
Taking advantage of circumstances; exploitative.
机会主义的;投机取巧的
adj.
(Of an infection or organism) attacking when the host's defenses are weakened.
(医学)机会性的(指趁宿主免疫力低下时发作)
词根拆分
词根派生opportun- + -istic(形容词后缀,「具有……特征的」)= 「以抓机会为特征的」。在医学中同样逻辑:opportunistic infection 指趁免疫系统低下时发作的病原体。
词根 port 还连着 95 个词使用指南
- 一般/贬义:opportunistic behavior, opportunistic politicians — 利用时机的
- 医学(专业):opportunistic infection, opportunistic pathogen — 趁免疫力低下时发作(常见于艾滋病、癌症治疗语境)
- 生物中性:opportunistic feeder — 有什么吃什么,用于动物时为中性
例句
- 1.
His opportunistic switch of parties angered former allies.
他投机性的政党转换激怒了旧盟友。
- 2.
Patients with weakened immunity are vulnerable to opportunistic infections.
免疫力低下的患者容易受机会性感染。
- 3.
Crows are opportunistic feeders, eating almost anything they find.
乌鸦是机会性觅食者,几乎什么都吃。