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单词 catalyst
释义
catalyst
noun[C]
uk
/ˈkæt.əl.ɪst/us
/ˈkæt̬.əl.ɪst/
chemistryspecialized
something that makes achemicalreactionhappenmorequicklywithout itself beingchanged
催化剂
aneventorpersonthatcausesgreatchange:
促成变化的人；引发变化的事件
The highsuiciderateactedasa catalystforchangein theprisonsystem.高自杀率促成了监狱系统的改革。
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You can also find related words, phrases, and synonyms in the topics:

Causing things to happen
(Definition ofcatalystfrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)

catalyst| American Dictionary

catalyst
noun[C]
us
/ˈkæt̬·əl·ɪst/
acondition,event, orpersonthat is thecauseof animportantchange
biology,chemistry
A catalyst is also asubstancethatcausesorspeedsachemicalreactionwithout itself beingchanged.
(Definition ofcatalystfrom theCambridge Academic Content Dictionary© Cambridge University Press)

catalyst| Business English

catalyst
noun[C]
uk
/ˈkætəlɪst/us
someone or something thatcausesabigchange:
the catalyst behind sthThe catalyst behind thiswelcometrendhas been themightyBillGates.
catalyst for sthAnoutsideleaderis oftenneededtoserveas acatalyst forchange.
a catalyst to (do) sthThe Government willactas a catalyst topromotecreativecollaborationbetweenbusinesses.
(Definition ofcatalystfrom theCambridge Business English Dictionary© Cambridge University Press)

Examplesofcatalyst

catalyst
Notably, the reaction rates attained by such catalysts are moderate, usually <1 minx1.
From theCambridge English Corpus
Here the pitched roof and dark finish appear on one level to be conventional usages but on another as catalysts for new associations.
From theCambridge English Corpus
Two of the major catalysts were increasing urbanisation and industrialisation.
From theCambridge English Corpus
When the complexity of the organic molecules pool increased, more sophisticated catalysts, including ribozymes and protein enzymes, could be selected.
From theCambridge English Corpus
The original catalysts may have been based on clays, various metals, inorganic and organic species that happened to be present and possess some catalytic activity.
From theCambridge English Corpus
Peptidyl-prolyl cis-trans isomerases, a superfamily of ubiquitous folding catalysts.
From theCambridge English Corpus
They weaken policy regimes, create conditions favorable for change, or act as catalysts for change.
From theCambridge English Corpus
The separation of binding from input makes it possible to write agents such as the catalysts mentioned in the introduction.
From theCambridge English Corpus
Clays and metal sulphides have been proposed as mineral catalysts that could have promoted the first prebiotic chemical reactions.
From theCambridge English Corpus
The adjacent possible is clearly influenced by the environment, which contains chemical partners, energy and the catalysts.
From theCambridge English Corpus
They are often used as catalysts in nanotechnology, and may bind polymers like proteins, lipids, and nucleic acids creating assemblies reminiscent of life forms.
From theCambridge English Corpus
Processes in chemical evolution must have involved several catalysts multifunctional in nature.
From theCambridge English Corpus
Homing endonucleases : structural and functional insight into the catalysts of intron/intein mobility.
From theCambridge English Corpus
The results presented in this paper are relevant in both cases, as they refer to the effect of metal ions as catalysts of the condensation of nucleotides.
From theCambridge English Corpus
No exogenous oxidation catalysts were added.
From theCambridge English Corpus
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
#https://dictionary.cambridge.org//dictionary/english/catalyst##
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更新时间：2025/2/5 18:51:35