Premunitive
[医] 预防接种的, 传染[病后]免疫的
🗣️ 情景例句
I would like to improve my English pronunciation.
我想改善我的英语发音。
Think nothing of it.
别放在心上。
They look young! Who's that man?
他们看上去好年轻啊！那个人是谁？