Tractrix
等切面曲线, 曳物线
🗣️ 情景例句
Let me foot the bill tonight. Maybe you can treat me next time.
今晚让我付账吧，也许下次你请客。
The contract contains basically all we have agreed upon during our negotiations.
合同将我们达成协议的内容基本上都写上了。
He's only forty-one years old, and he has already been to nearly every country in the world.
他只有41岁，但他却过世界上几乎每一个国家。