单词	smog
释义	smogsmog /smɒɡ $ smɑːɡ, smɒːɡ/ ●○○ noun [countable, uncountable] Word Origin WORD ORIGINsmog Origin: 1900-2000 smoke + fog Examples EXAMPLES FROM THE CORPUS Ethyl Corp. says it reduces smog and presents no threat to cars or public health. Eventually, smog-check stations are expected to electronically transmit smog certificates directly to the Department of Motor Vehicles. Flagged motorists will be notified by mail that they must get a smog check and have their autos repaired, Kniestedt said. Hydrocarbon smog from traffic; smoke from a coal-fired power station. In sunlight, VOCs can react in the lower atmosphere with nitrogen oxides to generate photochemical smog. On 75 days the smog was so bad that schoolchildren were advised to stay indoors. So did women who gave birth after the thick London smog of 1952. The streets are clean, there's no smog to dull the sunshine, and the skyscrapers don't overpower. Thesaurus THESAURUS► cloud noun [countable, uncountable] a white or grey mass in the sky that forms from very small drops of water: · The storm was still a way off but black clouds were gathering.· Thick cloud obscured the top of the hill. ► fog noun [countable, uncountable] very thick cloud near the ground which is difficult to see through: · The cars crashed into each other in thick fog.· The fog had lifted (=disappeared)slightly. ► mist noun [countable, uncountable] light cloud near the ground that makes it difficult for you to see very far. Mist is usually not as thick as fog. You often get mist near areas of water or mountains: · The morning mist was lifting and the sun was coming up.· A grey mist hung over the water.· The hills were shrouded in mist (=surrounded by mist). ► haze noun [singular, uncountable] smoke, dust, or mist in the air which is difficult to see through: · He saw the horses coming towards him through a haze of dust.· The road shimmered in the heat haze.· A pale blue haze hung over the far-off mountains. ► smog noun [countable, uncountable] dirty air that looks like a mixture of smoke and fog, caused by smoke from cars and factories in cities: · The city is covered in smog for much of the year.· A smog warning was issued for parts of Southern Oregon. ► thundercloud noun [countable] a large dark cloud that you see before or during a storm: · He watched the thunderclouds roll across the valley. ► vapour trail British English, vapor trail American English noun [countable] the white line that is left in the sky by a plane: · High overhead, a jet left its vapour trail across the blue sky. WORD SETS► Environment & waste acid rain, nounbiohazard, nounbottle bank, nouncatalytic converter, nounclean-up, nounconservancy, nounconservation, nounconservation area, nounconservationist, nounconserve, verbcontaminant, nouncontaminate, verbeco-, prefixeco-friendly, adjectiveecological, adjectiveecologist, nounecology, nounecosystem, nouneffluent, nounenvironmental, adjectiveenvironmentalist, nounenvironmentally friendly, adjectiveglobal warming, noungreen, verbgreenhouse effect, noungreenhouse gas, noungreen revolution, nounhabitat, nounnational park, nounnoise pollution, nounozone, nounozone-friendly, adjectiveparticulates, nounpoison, verbpollute, verbradioactive waste, nounradioactivity, nounrecyclable, adjectiverecycle, verbrecycling, nounreforestation, nounsewage, nounsewage works, nounsmog, nounsulphur dioxide, nountip, nountoxic waste, nounwaste disposal, nounwaste product, noun dirty air that looks like a mixture of smoke and fog, caused by smoke from cars and factories in cities—smoggy adjective
随便看	self-controlled self-critical self-criticism self-deception self-defeating self-defence self-denial self-denying self-deprecating self-deprecation self-destruct self-destruction self-destructive self-determination self-directed self-discipline self-disciplined self-doubt self-drive self-educated self-effacement self-effacing self-employed self-employment self-esteem

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