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booster dose的英文翻译是什么意思，词典释义与在线翻译：
英英释义
Noun:
-
an additional dose that makes sure the first dose was effective
booster dose的用法和样例：
例句
用作名词 (n.)
- Those young children who have not received a booster dose of vaccine in more than a year should receive an injection upon exposure.
一年多没有接受加强剂量疫苗注射的年幼儿童，受暴露时，应接受一次注射。
