D-n
[医]dextrose nitrogen ratio 葡萄糖氮比率，糖氮比率
🗣️ 情景例句
Hello? Yes. Yes, this is she.
喂， 是的， 是的， 是我。
He that gains well and spends well needs no account book.
收支正当，无须记帐。
Hi! Where are you from?Hi
，你是哪里的？