Nitrosification
亚硝化作用
🗣️ 情景例句
There is nothing interesting in the newspaper.
报纸上没有什么有趣的新闻。
Don't make it any worse than you can help.
尽量不要把事情弄得更糟。
I know! smiled Lucy. They have steps, and they begin with L!
“我知道！”露茜笑着说，“它们有阶梯，并且这个单词是以L开头的！”