Dalembertian
达兰伯算符
🗣️ 情景例句
You have my sincere apology.
我诚心诚意向你道歉。
You'd better go and see a doctor about that.
关于那个毛病，你最好去看医生。
Let me have a look. Oh, here it is. But it's an old one. Where is my new one?
让我看看，在这里，这是那个旧的，我那件新的哪去了呢？