Generatrix
n. 母点, 母线, 母面
🗣️ 情景例句
Well, then why are you so sad?
那你为什么如此难过？
I think I happen to represent them in accepting this award.
而我是碰巧来代表他们接受这个奖的。
Half an hour? That's too long! Is there a bus?
半小时？那太久了！有公共汽车吗？