Generatrix
n. 母点, 母线, 母面
🗣️ 情景例句
Oh, you're welcome.
噢！请别客气。
I can't be sure of my future plans.
我还没有明白地定下我将来的计划。
No, I think it is going to be mailed to your local branch.
不，寄到分社。