Word · Frequency #10511
reactive
易起反应的;反应性强的
Participating readily in reactions.
常用于化学,指物质容易发生反应。
- 1.
That reacts or responds to a stimulus.
对刺激作出反应或回应的。
- 2.
That readily takes part in reactions.
容易参与反应的。
- 3.
Characterized by induction or capacitance rather than resistance.
以感应或电容而非电阻为特征的。
- 4.
Reacting to the past rather than anticipating the future, not predictive.
对过去作出反应而非预见未来,非预测性的。
对刺激作出反应的;应答的;对刺激作出反应或回应的。;容易参与反应的。;以感应或电容而非电阻为特征的。;对过去作出反应而非预见未来,非预测性的。
In use
The government's reactive policies left the public frustrated when crises were handled only after they got worse.
Instead of making a plan, she stayed reactive and simply answered each email as it arrived.
Teaching children to be proactive rather than reactive helps them solve problems calmly.
be reactive to sth
表示对刺激、药物或物质产生反应。
The skin can be reactive to certain chemicals.
皮肤对某些化学物质可能产生反应。
be reactive with sth
常用于化学语境,指容易与某物发生反应。
Sodium is highly reactive with water.
钠与水反应性很强。
reactive + noun
作定语放在名词前,表示“反应的、活性的”。
Connections
Collocations
- chemically reactive
- 化学性质活泼的,容易发生化学反应的
- Fluorine is the most chemically reactive element.氟是化学性质最活泼的元素。
- highly reactive
- 高度反应的,极易起反应的
- These compounds are highly reactive, so they must be kept away from water.这些化合物极易起反应,所以必须远离水。
- reactive oxygen species
- 活性氧(化学性质活泼的含氧物质)
- Intense exercise can increase reactive oxygen species in muscle cells.剧烈运动会增加肌肉细胞中的活性氧。
- reactive to stimuli
- 对刺激作出反应的
- The patient's pupils are reactive to light stimuli.病人的瞳孔对光刺激有反应。
- reactive metal
- 活泼金属,易反应的金属
- Sodium is a reactive metal that must be stored in oil.钠是一种活泼金属,必须存放在油中。
Learner notes
Memory Tip
re(再次)+ active(活跃):一遇到刺激就再次活跃起来,所以是“反应的、易起反应的”。
Context & Register
语域:neutral 常见场景:chemistry、medicine、management 该义项表示“对刺激作出反应、易起反应”,多用于化学、医学和一般的工作/组织讨论中,语体中性偏正式;口语里较少单独使用,更多说 responsive 或 proactive。它跟政论语境中“反动的”是不同义项,注意区分。
Pronunciation & Spelling
这些词都以 -active 结尾,且重音在 ac 上,与 reactive /riˈæktɪv/ 押韵:active, inactive, interactive, proactive, radioactive, hyperactive。注意:creative /kriˈeɪtɪv/、positive /ˈpɑːzətɪv/ 等 -ative 结尾的词并不与 reactive 押韵,因为它们发 /eɪtɪv/ 或 /ətɪv/,不要被拼写误导。
Usage priority
Collins 词频等级为 1,建议结合例句记忆,而不是只背中文释义。
Dictionary facts from ECDICT, WIKTIONARY.