D-n
[医]dextrose nitrogen ratio 葡萄糖氮比率，糖氮比率
🗣️ 情景例句
You must have the wrong number.
你一定打错电话了。
I'm sorry. Has it been bothering you?
对不起，打扰你了？
Hello! Is there anyone at home?
喂！家里有人吗？