释义
n. 疫苗 v. 疫苗的,牛痘的
例句
1. This vaccine will give you immunity for two years. 接种这种疫苗可有两年免疫力。 2. 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.
