Methylnicotinamide
[化] 甲基烟酰胺
🗣️ 情景例句
I don't care how much I have to study. I have to pass this exam.
我不介意要学多少东西。我必须得通过考试。
Do you have a letter of introduction?
你有介绍信吗？
I have one, Mr. Wu. Here you are.
我有一把，吴先生。给你。