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- 这种疫苗用以为全体居民预防传染病。
The vaccine was used to protect the whole population against infection.
- 在各种医药研究中，应首先解决寻找新疫苗的问题。
The search for a new vaccine took priority over all other medical research.
- 接种这种疫苗可有两年免疫力。
This vaccine will give you immunity for two years.
- 他做了疫苗注射以预防狂犬病。
He had a vaccination against rabies.
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