•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 tonnes 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。

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