Caseinum
酪蛋白
🗣️ 情景例句
If you don't know a person's last name, use 'ma'am' or 'sir'.
如果你不知道一人的姓， 你应称呼他为 'ma'am' 或 'sir' 。
He that has a great nose thinks everybody is speaking of it.
做贼心虚。
Beautiful day, isn't it?
今天天气真好，是不是？