Generatrix
n. 母点, 母线, 母面
🗣️ 情景例句
Nice to meet you.
幸会。
Have you somewhat to do tomorrow,do it today.
明天如有事，今天就去做。
always respects a parent who admits that he is wrong,
他们总是尊敬的，对于能够承认错误或无知、