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BNC: 2548 COCA: 2617

B2 any basic substance that is used in or produced by a reaction involving changes to atoms or molecules化学品;化学制品

The government has pledged to reduce the amount of chemicals used in food production.政府承诺减少食品生产中化学制品的用量。
Each year, factories release millions of tons of toxic (= poisonous) chemicals into the atmosphere.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 use special chemicals to accelerate the growth of crops.

Organic chemicals are used in the manufacture of plastics, fibres, solvents and paints.

The body produces chemicals that are natural painkillers.

Toxic chemicals continue to be dumped in the North Sea.

Many chemicals have a damaging effect on the environment.

B2 relating to chemicals化学的;化学制品的

The chemical industry produces such things as petrochemicals, drugs, and rubber.化学工业生产诸如石化产品、药品、橡胶之类的东西。

More examples

Sodium chloride is the chemical name for common salt.

All chemical weapons facilities will be deactivated.

Estimates of the amount of money needed to decontaminate the heavily polluted chemical installations vary.

We had to learn chemical formulae at school, but I can only remember H2O for water.

The chemical properties of coal are still incompletely understood.

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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