Variolation
[医] 人痘接种, 天花接种, 引痘
🗣️ 情景例句
We finished addressing over three hundred envelopes.
我们写了三百多个信封地址了。
I don't like the conclusion of the play.
我不喜欢这出戏的结局。
Though in those days, traveling was not as easy as it is today,
尽管在当时旅行不像现在这么容易，