Tractrix
等切面曲线, 曳物线
🗣️ 情景例句
I'd like to keep her, too.
我也愿意收留她。
A book is the same today as it always was and it will never change.
一本好书今天如此，将来也如此，永不改变。
Yes, I think we do. Lucy, we need some more hot water. Can you go and get some, please?
是的，再要些吧。露西，我们还要热开水。请你去弄些来，行吗？