Niacytin
烟酸与糖的络合物
🗣️ 情景例句
I keep thinking about that bag of film. Eight rolls.
我一直在想着旅行袋的事。一共有八卷呢。
That radio's pretty loud. Could you turn it down, please?
收音机太响了，你能把声音开小一点吗？
She knew that it must be the baker.
她知道来了一定面包师。