Dalembertian
达兰伯算符
🗣️ 情景例句
Hey, go to the doctor. That cough sounds bad.
嘿，去看看医生吧，听起来你咳嗽得挺厉害的。
Please don't snack; you will ruin your dinner.
请别吃点心了，你会对正餐失去胃口的。
And what's this?
那么这个呢？