Tfn
[医][=total fecal nitrogen]总粪氮（量），粪内总氮量
🗣️ 情景例句
I retired because... I wanted to be with my family.
我退休是因为……我想和全家人在一起。
A hasty man is seldom out of trouble.
性急难免出岔子。
I think it's all right.
我觉得可以。