您要查找的是不是：
- Oral Polivirus Vaccine 口服脊髓灰质炎疫苗[免疫性疫苗]
- An oral thermometer; an oral vaccine. 口用体温计; 口服菌苗
- An oral thermometer;an oral vaccine. 口用体温计；口服菌苗
- He will take an oral examination. 他将接受口试。
- My oral English is pretty rusty. 我的英语口语全荒废了。
- This vaccine will give you immunity for two years. 接种这种疫苗可有两年免疫力。
- Tongue twisters are used in our oral practice. 我们在口语练习中用饶口令。
- The oral opening in an earthworm is small. 蚯蚓的口是很小的。
- The doctor prescribed an oral dose of medicine. 医生开了一剂口服药。
- An unapproved vaccine; an unapproved protest march. 未经试验的疫苗; 未获批准的抗议示威
- The class is chopped up into small groups for oral drill. 为进行口语训练，班级分成为几个小组。
- The old man told us a story passed on by oral tradition. 老人给我们讲述了一个口头流传的故事。
- She snatched at every chance to practice her oral English. 她把握一切机会练习英语口语。
- An oral agreement is not enough; we must have a written promise. 只有口头协议是不够的; 我们必须有一个书面承诺。
- 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。
- The smallpox vaccine has saved many lives. 天花疫苗挽救了许多人的生命。
- 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。
- We're having an oral test in class this week. 这星期我们班有一次口试。
- He failed many times but he finally broke through to find a successful polio vaccine. 他失败了许多次，但终于发现了有效的预防小儿麻痹症的疫苗。
- Salk vaccine is a"killed" vaccine. 沙克疫苗是一种不会传染的疫苗。
