Systemization
[医]系统化
✅ 同义词
🗣️ 情景例句
You'll be glad to hear that Bill is alive and kicking.
比尔现在精神饱满，你听了一定很高兴。
To send mail(a letter)
邮寄邮件
Sorry, I don't know.
对不起，我不知道。