Tfn
[医][=total fecal nitrogen]总粪氮（量），粪内总氮量
🗣️ 情景例句
I wish I could go there with you, Grandpa.
我真希望我能够跟你一起去， 爷爷。
I'm glad to meet you.
我很高兴认识你。
She suddenly got into a panic and stopped her car.
她一惊之下突然把车停了下来。