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 pest [pest]   添加此单词到默认生词本
n. 令人讨厌之物, 有害之物, 害虫, 瘟疫

[医] 鼠疫, 瘟疫




    pest
    [ noun ]
    1. a serious (sometimes fatal) infection of rodents caused by Yersinia pestis and accidentally transmitted to humans by the bite of a flea that has bitten an infected animal

    2. <noun.state>
    3. any epidemic disease with a high death rate

    4. <noun.state>
    5. a persistently annoying person

    6. <noun.person>
    7. any unwanted and destructive insect or other animal that attacks food or crops or livestock etc.

    8. <noun.animal>
      he sprayed the garden to get rid of pests
      many pests have developed resistance to the common pesticides


    Pest \Pest\, n. [L. pestis: cf. F. peste.]
    1. A fatal epidemic disease; a pestilence; specif., the
    plague.

    England's sufferings by that scourge, the pest.
    --Cowper.

    2. Anything which resembles a pest; one who, or that which,
    is troublesome, noxious, mischievous, or destructive; a
    nuisance. ``A pest and public enemy.'' --South.

    1. Helicopters sprayed up to 20 square miles of suburban Miami with malathion in eight aerial treatments to kill Mediterranean fruit flies, considered the most destructive farm pest because it can attack 250 fruits and vegetables.
    2. While alternative chemicals exist for use in the United States, there are some regions of the world, such as the tropics, where weather and pest conditions prevent other products from being effective, she said.
    3. USDA scientists said Wednesday they are fighting an $800,000 war against the Russian wheat aphid, a newly imported pest that caused an estimated $36 million in damage to wheat and feed grains last year.
    4. They warn, too, that what harms the pest may also hurt other insect or animal life.
    5. Pruning, weeding, fertilizing, pest control and similar maintenance often isn't required because of plant adaptability.
    6. He made a real pest of himself pursuing Angus Ogilvy at a party several years ago.' Once these people had joined Maxwell's staff they had to suffer the same absurd decrees as other members.
    7. He is the agency's national program leader for research on natural or biological pest controls.
    8. The wine bug phylloxera that devastated the world's vineyards a century ago is back, and experts say California vintners may have to spend about $500 million during the next decade to thwart the pest.
    9. The attack against the pest has primarily involved spraying of Baccillus thurigiensis, a bacterium known as Bt that attacks the moth's digestive tract, and use of diflubenzuron, a chemical.
    10. The pest costs American farmers $400 million annually.
    11. But in 1986, a pest exterminator found the duffel bag full of letters in an attic in Raleigh, N.C.
    12. This year the University of Reading addresses itself to the compelling problem of pest control.
    13. Caribbean governments have been advised that a strengthening of quarantine regulations will be necessary to prevent the spread of the fly, although scientists say it is also likely that the pest could be spread by wind.
    14. Hundreds of acres already have been destroyed by the pest, which may have stowed away with refugees from Sri Lanka fleeing to southern India.
    15. "It's really the first time a major project of this sort has asked the question ahead of time: `What can we do to reduce our pest control problem and minimize the impact?"' said William Jackson, head of the four-member team.
    16. Two weeks ago, officials declared victory in a nearly 16-month, $52 million battle against the crop-destroying pest.
    17. But the pest eats more than 200 plant species.
    18. Rentokil, best known for pest control, put a cat among the pigeons on Thursday by raising its dividend in response to the chancellor's Budget. The increase aimed to compensate shareholders who do not pay tax, for example pension funds.
    19. The US wants the market open by next January. The US has spent considerable sums trying to meet Japanese requirements for controlling the codling moth pest and fireblight disease.
    20. The Brooklyn Botanical Garden played host to the first-ever conference to study everything from fund-raising to new methods of pest control, as well as to show off its own $25 million restoration and new construction, the Steinhardt Conservatory.
    21. Robert Griffith, chief of the bureau of pest eradication for the Florida Department of Agriculture and Consumer Service, said he had never heard of canker being found on mature citrus fruit that was ready to be shipped.
    22. Appropriate funds for programs that promote use of non-chemical pest control systems.
    23. They mainly attack a tropical mole cricket that is only a pest in South Florida, however.
    24. There is no question that the gypsy moth is a pest, and has been since 1869, when a French bug fancier, trying to breed a better silk caterpillar in the U.S., brought some over from Europe.
    25. "They kind of tend to drive you foolish," says James F. Dill, a University of Maine extension specialist in pest management.
    26. Large quantities of pesticide beneath buildings may keep the pest out, but won't destroy nests that could be as far as 600 feet away.
    27. "We are now just getting back into an era where entomologists are realizing you can't solve the problem with pesticides alone,' said Robert Metcalf, who has worked more than 50 years on pest controls.
    28. Here is a typical chemical season for Washington apples: In early April, an organophosphate spray _ Supracide, Lorsban or parathion _ kills the eggs of European red mites and also controls the spread of San Jose Scale, a pest which can kill trees.
    29. The company says its planned product is unique among biological and genetically engineered pesticides in that it aims to "vaccinate" the plant against attack by the target pest _ the corn borer, a kind of caterpillar.
    30. Wasps are already used for pest control in greenhouses in Europe and the United States.
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