The word is 'vaccine', pronounced ['væksiːn; -ɪn], meaning a substance used to provide immunity against one or more diseases, specifically mentioning a cowpox vaccine.
这个单词是 'vaccine'，发音为 ['væksiːn; -ɪn]，意思是用于预防疾病的疫苗或牛痘苗。
| 单词 | vaccine |
|---|---|
| 发音 | ['væksiːn; -ɪn] |
| 释义 | n. 疫苗；牛痘苗 |
| 词序 | 4212 |
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