Nitrozation
亚硝化作用
🗣️ 情景例句
Don't worry about being late. It's fine.
别为迟到担心了 没有关系。
Why didn't you call me?
为什么你不打电话给我？
Sorry. I'm free every day except today.
对不起。我每天都有空，唯独今天没空。