Chemodifferentiation
化学分化
🗣️ 情景例句
May I use a knife and fork please?
我可以用刀叉吗？
You'll be on air in two minutes.
两分钟以后你会上电视。
Oh good! said Ann. May I put them on, please?
“好啊！”安说，“我可以插上蜡烛了吗？”