Introd
[医][=introduction]介绍, 序论, 带进
🗣️ 情景例句
Oh, I forgot.
噢， 我忘了。
I'm sorry, but I didn't catch what you said.
对不起，我没有听明白你的话。
I hope you are well. Thank you for your last letter.
愿你身体健康。感谢你上次来信。