vaccine

英 ['v?ksi?n; -?n] 美[v?k'sin]

CET6TEM4IELTSGRETOEFL中低頻詞擴展詞匯

復數(shù):?vaccines;

vaccine 疫苗

來自拉丁語vacca,母牛，可能來自擬聲詞，詞源同vaquero.疫苗義來自1800年，英國醫(yī)生Edward Jenner發(fā)現(xiàn)了預防天花的技術，即通過把提取的牛痘病毒疫苗注射入健康人體內使之產生抗體，以激發(fā)人體的免疫系統(tǒng)，從而達到預防天花的目的。

vaccine: vaccine: [18] Vaccine was adapted from Latin vaccīnus, which means literally ‘of a cow’ (it was a derivative of vacca ‘cow’, source of French vache). It was used by the British physician Edward Jenner at the end of the 18th century in the terms vaccine disease for ‘cowpox’, and hence vaccine inoculation for the technique he developed of preventing smallpox by injecting people with cowpox virus. The verb vaccinate was coined from it at the beginning of the 19th century, but vaccine itself was not used as a noun, meaning ‘inoculated material’, until the 1840s.
vaccine (n.): "matter used in vaccination," 1846, from French vaccin, noun use of adjective, from Latin vaccina, fem. of vaccinus "pertaining to a cow" (see vaccination). Related: Vaccinal; vaccinic.

1. At present, no widely approved vaccine exists for malaria.: 目前，還沒有被廣泛認可的瘧疾疫苗。

2. Seven million doses of vaccine are annually given to British children.: 英國孩子每年要接種7百萬劑疫苗。

3. Roll on the day someone develops an effective vaccine against malaria.: 盼望有一天有人會研制出一種能有效預防瘧疾的疫苗。

4. The monkeys had been immunized with a vaccine made from infected cells.: 這些猴子已經注射了由受感染的細胞培養(yǎng)而成的疫苗。

5. This vaccine is not normally provided free under the NHS.: 這種疫苗在國民醫(yī)療保健系統(tǒng)中通常不是免費提供的。