Tractrix
等切面曲线, 曳物线
🗣️ 情景例句
Well, it's done. Tomorrow morning at a publisher's office.
好了， 事情办成了。明天早晨要到出版社老板的办公室。
We feel your product is too specialized for mass marketing.
我们认为你们的产品对广大市场而言太专业化了。
Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back.
大家都知道，在墙壁或山腰附近发出的喊声，就会听到回声。