vaccine

['væksi:n]

n.疫苗

例句与用法：

A prophylactic agent, device, or measure, such as a vaccine or drug.

预防剂预防性的物质、器具或措施，比如疫苗或药物

The vaccine was used to protect the whole population against infection.

这种疫苗用以为全体居民预防传染病。

The search for a new vaccine took priority over all other medical research.

在各种医药研究中，应首先解决寻找新疫苗的问题。

This vaccine will give you immunity for two years.

接种这种疫苗可有两年免疫力。

详细释义：

a.

牛痘的; 疫苗的

n.

牛痘苗; 疫苗