Nnp
[医][=n-nitroso-piperidine]n-亚硝基替哌啶
🗣️ 情景例句
I've got to keep my nose to the grindstone to support my family.
我拼命工作养家。
Sorry, it's broken. You have to use the stairs.
对不起，它坏了，你只能走楼梯了。
so he must stay in bed for a week.
因此他必须卧床一周。