Umer
abbr. unit mass emission rates 单位质量发射率
🗣️ 情景例句
And give her a teaspoon of the medicine after every meal.
每餐之后给她吃一茶匙的药。
Can anybody scratch my back for me?
有人来替我搔背吗？
I'm sorry I don't know. You'd better ask that policeman over there.
对不起，我不知道。你最好问问那边的警察。