Epicycloidal
圆外旋轮线的
🗣️ 情景例句
It's none of my business, but I think you ought to work harder.
这不关我的事，但我想你应该更加努力地工作。
That can't be.
不可能。
We're going to help some farmers with their work.
我们打算去帮助一些农民干活。