Tractrix
等切面曲线, 曳物线
🗣️ 情景例句
I have loved Lillian all these years,
这些年来我一直爱着Lillian，
We tried in vain to make him change his mind.
我们试图使他改变他的主意，但白费力气。
On Wednesday evening, we went to the Town Hall.
星期三的晚上，我们去了市政厅。