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单词 chemical
释义
chemical
noun[C]
uk
/ˈkem.ɪ.kəl/us
/ˈkem.ɪ.kəl/
B2
anybasicsubstancethat is used in orproducedby areactioninvolvingchangestoatomsormolecules:
化学品；化学制品
Thegovernmenthaspledgedtoreducetheamountof chemicals used infoodproduction.政府承诺减少食品生产中化学制品的用量。
Eachyear,factoriesreleasemillions oftonsoftoxic(=poisonous)chemicals into theatmosphere.每年，工厂将数百万吨的有毒化学物品排放到大气中。
More examples
  • They usespecialchemicals toacceleratethegrowthofcrops.
  • Organic chemicals are used in themanufactureofplastics,fibres,solventsandpaints.
  • Thebodyproduceschemicals that arenaturalpainkillers.
  • Toxic chemicalscontinueto bedumpedin theNorthSea.
  • Many chemicals have adamagingeffecton theenvironment.
SMART Vocabulary: related words and phrases
Chemistry - general words
  • acceptor
  • aerosol
  • aerosolize
  • allotrope
  • amphiprotic
  • chemical formula
  • conformation
  • cyclic
  • distilled water
  • electrolyte
  • electrolytic
  • endocrine disruptor
  • endothermic
  • inorganic chemistry
  • ionic bond
  • nonchemical
  • nonelectrolyte
  • nonreactive
  • reactive
  • reactivity
See more results »
chemical
adjective
uk
/ˈkem.ɪ.kəl/us
/ˈkem.ɪ.kəl/
B2
relatingto chemicals:
化学的；化学制品的
The chemicalindustryproducessuch things aspetrochemicals,drugs, andrubber.化学工业生产诸如石化产品、药品、橡胶之类的东西。
More examples
  • Sodiumchlorideis the chemicalnameforcommonsalt.
  • All chemicalweaponsfacilitieswill bedeactivated.
  • Estimates of theamountofmoneyneededtodecontaminatetheheavilypollutedchemicalinstallationsvary.
  • We had tolearnchemicalformulaeatschool, but I can onlyrememberH2O forwater.
  • The chemicalpropertiesofcoalare stillincompletelyunderstood.
SMART Vocabulary: related words and phrases
Chemistry - general words
  • acceptor
  • aerosol
  • aerosolize
  • allotrope
  • amphiprotic
  • chemical formula
  • conformation
  • cyclic
  • distilled water
  • electrolyte
  • electrolytic
  • endocrine disruptor
  • endothermic
  • inorganic chemistry
  • ionic bond
  • nonchemical
  • nonelectrolyte
  • nonreactive
  • reactive
  • reactivity
See more results »

Related word

chemicallyadverb
(Definition ofchemicalfrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)

chemical| American Dictionary

chemical
noun[C]
us
/ˈkem·ɪ·kəl/
anybasicsubstancethat is used in orproducedby areactioninvolvingchangestoatomsormolecules:
Hisbusinessmanufacturedfarmchemicals.
chemical
adjective
us
/ˈkem·ɪ·kəl/
of,involvedwith,relatingto, or made by using chemicals orchemistry:
the chemicalindustry
a chemicalplantproducingplasticsandrubber

chemically

adverbus
/ˈkem·ɪk·li/
chemicallytreatedpaper
(Definition ofchemicalfrom theCambridge Academic Content Dictionary© Cambridge University Press)

chemical| Business English

chemical
noun[C]
uk
/ˈkemɪkəl/us
anybasicsubstancewhich is used in orproducedby areactioninvolvingchangestoatomsormolecules:
Thegovernmenthaspledgedtoreducetheamountof chemicals used infoodproduction.
Eachyear,factoriesreleasemillions oftonnesoftoxicchemicalsinto theatmosphere.
chemical
adjective
uk
/ˈkemɪkəl/us
relatingto chemicals:
Thechemicalindustryproducessuch things aspetrochemicals,drugs,paint, andrubber.

chemically

adverb
Thefundprovidesmoneytocleanup chemicallypollutedindustrialsites.
(Definition ofchemicalfrom theCambridge Business English Dictionary© Cambridge University Press)

Examplesofchemical

chemical
It is especially worth noting that in the market, the price of organic food is at least twice that of food treated with chemicals.
From theCambridge English Corpus
Her history ofchemicaltheory refuses to isolate theory from the laboratory, the lecture hall, or the public and its philosophical interests.
From theCambridge English Corpus
Any given event may be described by referring to various levels of description, such as the physical,chemical, biological, psychological, and sociological.
From theCambridge English Corpus
To inducechemicalreactions on these surfaces it is important to consider an energy source.
From theCambridge English Corpus
Recent years have seen considerable progress in the development ofchemicalself-replicating systems.
From theCambridge English Corpus
The cost of purpose-built manufacturing facilities andchemicalsynthesis are a critical barrier to the commercial development of many potential pesticides.
From theCambridge English Corpus
No reduction inchemicalfertilizer use for potatoes and silage corn was observed and increased crop yields were unlikely.
From theCambridge English Corpus
Such a conclusion may have practical implications relating tochemicalchange in alloys.
From theCambridge English Corpus
Chickens' diseases are typically objects of prevention, mainly by mechanical distribution of chemicals throughout the entire flock.
From theCambridge English Corpus
However, cattle producers used to controlling tick infestations withchemicalacaricides typically treat reactively.
From theCambridge English Corpus
The facility is used for different biological,chemicaland aerodynamical experiments.
From theCambridge English Corpus
However, it is difficult to increase a signal which is specific to a single individual because ofchemicalmimicry.
From theCambridge English Corpus
It was demonstrated that by fixing thechemicalpotential the average number or concentration can be determined.
From theCambridge English Corpus
Many recent studies have demonstrated that astrocytes releasechemicaltransmitters in a process termed gliotransmission.
From theCambridge English Corpus
Geochemical observations appear to mirror palaeontological data, thus possibly relatingchemicalchanges within the carbon cycle to biotic evolution.
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.

Collocationswithchemical

chemical

These are words often used in combination withchemical.

Click on a collocation to see more examples of it.

agricultural chemical
Reducing soil erosion andagriculturalchemicallosses with conservation tillage.
From theCambridge English Corpus
chemical application
For land preparation and irrigation; includes fertilizer andchemicalapplicationand weeding.
From theCambridge English Corpus
chemical biology
His expertise is bioorganic and synthetic chemistry, especially in carbohydrate chemistry and chemical biology.
From
Wikipedia
Creatives commons iconThis example is from Wikipedia and may be reused under a CC BY-SA license.
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/chemical##
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更新时间：2024/12/28 0:16:35