Booster injection
[医] 激发注射
🧩 词语组成解析
booster
['bu:stə]
n. （电器的）增压机;助推器，多级火箭的第一级;热情的支持者;
🗣️ 情景例句
but it's too early to know for sure.
但我现在还不能决定。
Knowledge advances by steps not by leaps.
知识的获得是循序渐进而不是突飞猛进的。
You see, we've been in China for over two years now, so we are travelling back to England soon for a holiday.
您知道，我们到中国已有两年多时间了，所以不久后我们就要回英国度假了。