• n. 疫苗；牛痘苗
• adj. 疫苗的；牛痘的

來(lái)自拉丁語(yǔ)vacca,母牛，可能來(lái)自擬聲詞，詞源同vaquero.疫苗義來(lái)自1800年，英國(guó)醫(yī)生Edward Jenner發(fā)現(xiàn)了預(yù)防天花的技術(shù)，即通過(guò)把提取的牛痘病毒疫苗注射入健康人體內(nèi)使之產(chǎn)生抗體，以激發(fā)人體的免疫系統(tǒng)，從而達(dá)到預(yù)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(méi)有被廣泛認(rèn)可的瘧疾疫苗。

來(lái)自柯林斯例句

2. Seven million doses of vaccine are annually given to British children.

英國(guó)孩子每年要接種7百萬(wàn)劑疫苗。

來(lái)自柯林斯例句

3. Roll on the day someone develops an effective vaccine against malaria.

盼望有一天有人會(huì)研制出一種能有效預(yù)防瘧疾的疫苗。

來(lái)自柯林斯例句

4. The monkeys had been immunized with a vaccine made from infected cells.

這些猴子已經(jīng)注射了由受感染的細(xì)胞培養(yǎng)而成的疫苗。

來(lái)自柯林斯例句

5. This vaccine is not normally provided free under the NHS.

這種疫苗在國(guó)民醫(yī)療保健系統(tǒng)中通常不是免費(fèi)提供的。

來(lái)自柯林斯例句