Tfn
[医][=total fecal nitrogen]总粪氮（量），粪内总氮量
🗣️ 情景例句
Keep it. I'm buying tonight.
收着吧，今晚我付钱。
Don't you care about this country's future?
难道你不会国家首任担忧吗？
As they are expected to be hungry after their long journey, food is laid out for them.
因为预料到他们在经过长途旅行之后会感到饥饿，所以为他们摆放好了食品。