Word · Frequency #8852
Fully loadedcatalyst
催化剂；触媒
catalyst
- 1.
A substance that increases the rate of a chemical reaction without being consumed in the process.
增加化学反应速率而不被消耗的物质。
- 2.
(chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
(化学)一种引发或加速化学反应而自身不受影响的物质
- 3.
Something that encourages progress or change.
促进进步或改变的事物。
- 4.
something that causes an important event to happen
引发重要事件的事物
- 5.
An inciting incident that sets the successive conflict into motion.
引发后续冲突的导火索事件。
- 6.
A catalytic converter.
催化转化器
- 7.
An object that facilitates the casting of a spell (such as a magic wand).
施法媒介(如魔杖)
增加化学反应速率而不被消耗的物质。；(化学)一种引发或加速化学反应而自身不受影响的物质；促进进步或改变的事物。；引发重要事件的事物；引发后续冲突的导火索事件。
In use
Certain enzymes work as catalysts to speed up digestion in the human body.
The chemist added a catalyst to the mixture to make the reaction happen faster.
A catalyst remains unchanged after the chemical reaction is complete.
the invasion acted as a catalyst to unite the country
catalyst for sth
表示‘导致某事发生的促进因素’。
The election was a catalyst for political change in the country.
这次选举是该国政治变革的催化剂。
catalyst in sth
强调在某过程中的催化作用。
His speech acted as a catalyst in the peace negotiations.
他的讲话在和平谈判中起到了催化剂作用。
Connections
Collocations
- a chemical catalyst
- 化学催化剂
- The reaction requires a chemical catalyst to proceed.这个反应需要一种化学催化剂才能进行。
- a catalyst for change
- 变革的催化剂
- The protest was a catalyst for political change.这场抗议是政治变革的催化剂。
- act as a catalyst
- 充当催化剂
- His speech acted as a catalyst for the movement.他的演讲充当了这场运动的催化剂。
- a powerful catalyst
- 强大的催化剂
- Education is a powerful catalyst for social progress.教育是社会进步的强大催化剂。
- a major catalyst
- 主要催化剂
- The invention was a major catalyst for the industrial revolution.这项发明是工业革命的主要催化剂。
- an economic catalyst
Learner notes
Memory Tip
猫（cat）踩油门加速，自己不动——催化剂。
Context & Register
语域：neutral 常见场景：chemistry、figurative use 该词在化学领域为专业术语，在日常比喻用法中也常见，因此注册标记为中性。通常用于正式或半正式语境。
Grammar Note
常用作可数名词，常见搭配：a catalyst for (change, growth, etc.)
Pronunciation & Spelling
Genuine sound matches: analyst, journalist, specialist, capitalist, naturalist (all end with /əlɪst/ and stress on first syllable). Artist ends in /ɪst/ but is two syllables; it is a common lookalike with a different rhythm.
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。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.