Tfn
[医][=total fecal nitrogen]总粪氮（量），粪内总氮量
🗣️ 情景例句
Hello, this is ... What can I do for you?
喂， 我是……我能为你做点什么吗？
She can only speculate on the amount of damage done.
她只知道推测损失额的方法。
Civilized men like such a way of living.
文明人喜欢这样一种生活方式。