| 词组 | poisonous |
| 释义 | poisonous /ˈpɔɪzənəs/ adjective containing or producing a substance that is likely to kill you, or make you very illnounspoisonous gas/fumes Car engines produce poisonous gases such as carbon monoxide.a poisonous snake/spider/insect/fish If you have been bitten by a poisonous snake, you should seek medical help immediately.a poisonous mushroom/berry/plant Some mushrooms are extremely poisonous.a poisonous substance/chemical Many people do not like the idea of using poisonous chemicals in the garden.poisonous waste The factory was dumping hundreds of tons of poisonous waste into the river.adverbshighly/extremely poisonous The tasty-looking berries are highly poisonous.deadly poisonous (=extremely poisonous and causing death) This small spider has a deadly poisonous bite.prepositionspoisonous to sb/sth The leaves are poisonous to humans.THESAURUS: poisonous toxicwaste | chemicals | substances | fumes | gases | metals used about chemical substances that are harmful to people and the environment: Toxic waste was being dumped in the ocean. | Crops are sprayed with highly toxic chemicals to prevent damage from insects. | Lead is toxic to humans. hazardouswaste | material | chemicals | substance hazardous substances are likely to harm people, animals, or the environment if they are not dealt with or got rid of carefully: Hazardous waste is stored deep under the ground in special containers. | The train was carrying nuclear waste and other hazardous materials. | There are strict regulations concerning the use of hazardous chemicals. | Plutonium is one of the most hazardous substances known to man. deadlypoison | snake | spider | gas | effect extremely poisonous and likely to kill you: He is seriously ill after swallowing a small amount of a deadly poison. | The woman was bitten by a deadly snake. | The red back spider is one of the most deadly spiders in Australia. | Terrorists released a deadly gas on the subway. | Nowadays people know much more about the deadly effects of radiation. noxious formalfumes | substance | gas | chemicals | substance | vapour noxious gases and other substances are poisonous: The firefighters were treated in hospital after breathing in noxious fumes. | The soil may be contaminated with noxious substances. | It uses less fuel than a normal car, and gives off less noxious gas. | The island has become a dumping-ground for nuclear waste and noxious chemicals. | Campaigners are calling for this noxious substance to be banned. venomous formalsnake | reptile | creature | mammal | bite a venomous snake or other animal uses poison to attack and kill other animals: The black mamba is one of the most venomous snakes in the world. | Some people keep venomous reptiles as pets. | The spider’s venomous bite has been known to cause human deaths on rare occasions.Saying that something is extremely poisonousYou can say highly poisonous/toxic, extremely poisonous/toxic, or very poisonous/toxic. (Highly is much more common than the others.)You say extremely hazardous or very hazardous (not ‘highly’). You use deadly, noxious, and venomous on their own, without an adverb. |
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