Retrovaccation
[医] 还原接种法
🗣️ 情景例句
It's not necessary to whisper, Harry.
没有必要压低声音说话， Harry。
Some people believe in the Loch Ness monster.
有些人相信尼斯湖水怪是存在的。
I'm sorry, but this week isn't very convenient for me.
对不起，这个星期我都不方便。