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BNC: 2548 COCA: 2617

chemical

adjective
/ˈkemɪkl/
/ˈkemɪkl/
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  1. connected with chemistry与化学有关的;化学的
    • changes in the chemical composition of the atmosphere大气化学成分的变化
  2. produced by or using processes that involve changes to atoms or molecules用化学方法制造的;化学作用的
    • chemical reactions/compounds化学反应/化合物
    • chemical processes化学过程
    Topics Physics and chemistryb1
  3. using or connected with chemicals与化学有关的;化学的
    • a chemical plant (= a factory producing chemicals)化工厂
    • chemical agents (= substances)化学药剂
    • the chemical industry化学工业
    • a chemical attack化学攻击
    • Chemical treatment with chlorine provides some protection against contamination.用氯进行化学处理可以防止污染。
  4. Word Originlate 16th cent.: from French chimique or modern Latin chimicus, chymicus, from medieval Latin alchymicus, from alchimia, from Arabic al-kīmiyā', from al ‘the’ + kīmiyā' (from Greek khēmia, khēmeia ‘art of transmuting metals’).

chemical

noun
/ˈkemɪkl/
/ˈkemɪkl/
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  1. a substance obtained by or used in a chemical process化学制品;化学品
    • toxic chemicals有毒化学品
    • Toy manufacturers have been banned from using the chemicals.玩具制造商被禁止使用这些化学物质。
    • exposure to hazardous chemicals接触危险化学品
    • Farmers are being urged to reduce their use of chemicals and work with nature to combat pests.农民们被敦促减少化学物质的使用,并与自然一起对抗害虫。
    • The condition may be caused by an imbalance of chemicals in the brain.这种情况可能是由大脑中化学物质的不平衡引起的。
    Extra Examples
    • We don't use many chemicals on our farm these days.我们农场如今不大量使用化学品了。
    • chemicals discharged by industry into our lakes and rivers工厂排入湖里和河里的化学物质
    • Hormones are chemicals that are released in the body and control many important functions.激素是体内释放的化学物质,调控很多重要的机能。
    • This chemical is often used to make cleaning products.这种化学品常用来制作清洁产品。
    Topics Physics and chemistryb1
    Oxford Collocations Dictionaryadjective
    • organic
    • inorganic
    • synthetic
    verb + chemical
    • manufacture
    • produce
    • dump
    chemical + noun
    • factory
    • plant
    • works
    See full entry
    Word Originlate 16th cent.: from French chimique or modern Latin chimicus, chymicus, from medieval Latin alchymicus, from alchimia, from Arabic al-kīmiyā', from al ‘the’ + kīmiyā' (from Greek khēmia, khēmeia ‘art of transmuting metals’).
BNC: 2548 COCA: 2617
chemical

noun

ADJECTIVE | VERB + CHEMICAL | CHEMICAL + NOUN ADJECTIVEorganic有機化學品inorganic, synthetic無機/合成化學物質dangerous, harmful, hazardous, poisonous, toxic, volatile危險化學品;有害化學物質;有毒化學物質;揮發性化學物質agricultural, environmental, household, industrial農用/環境用/家用/工業用化學品VERB + CHEMICALmanufacture, produce製造/生產化學品dump, release傾倒/排放化學物質chemicals released by industry into our lakes and rivers工廠排入湖泊和河流的化學物質contain含有化學物質use使用化學品We don't use many chemicals on our farm these days.我們農場如今不大量使用化學品了。be exposed to暴露於化學物質之下Many workers are regularly exposed to dangerous chemicals.許多工人經常與危險化學品接觸。CHEMICAL + NOUNfactory, plant, works化工廠pollution from a big chemical plant來自一家大型化工廠的污染business, company化工企業/公司industry, manufacturing化學工業;化學品製造weapon化學武器
BNC: 2548 COCA: 2617
chemical noun
material
BNC: 2548 COCA: 2617
chemical
Types of chemical substance: acid, alkali, base...
Describing chemicals and chemical processes: active, aerobic, alkaline...

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