ragweed

听听怎么读

英 [?r?gwi:d]

美 [?r?ɡ?wid]

是什么意思

豚草属；

英英释义

ragweed[ 'r?ɡwi:d ]

n.
- widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity
  同义词：ragworttansy ragwortbenweedSenecio jacobaea
- any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
  同义词：ambrosiabitterweed

学习怎么用

权威例句

Competition and fecundity of giant ragweed in corn.
Late asthmatic responses induced by ragweed pollen allergen
Immunotherapy with a ragweed-toll-like receptor 9 agonist vaccine for allergic rhinitis.
Computer image analysis and classification of giant ragweed seeds.
Seed Size and Burial Effects on Giant Ragweed (Ambrosia trifida) Emergence and Seed Demise
Use of an anti-IgE humanized monoclonal antibody in ragweed-induced allergic rhinitis.
IgE antibody measurements in ragweed hay fever. Relationship to clinical severity and the results of immunotherapy.
Conjugation of immunostimulatory DNA to the short ragweed allergen Amb a 1 enhances its immunogenicity and reduces its allergenicity...
Omalizumab pretreatment decreases acute reactions after rush immunotherapy for ragweed-induced seasonal allergic rhinitis
Effect of immunotherapy on immunoglobulin E and immunoglobulin G antibodies to ragweed antigens: A six-year prospective study ☆ ☆☆

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