单词：vaccine inoculation
vaccine inoculation的用法和样例：
例句
- Legitimate and needy vaccine inoculation is permitted.允许使用合法且需要的疫苗接种。
- Maternal transmission is the primary reason for vaccine failure and is the challenge that needs to be addressed in future vaccination programs.母婴传播是疫苗失败的主要原因，也是将来疫苗接种计划需要考虑的一项挑战。
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