Generatrix
n. 母点, 母线, 母面
🗣️ 情景例句
What's the difference between A and B?
A和B有什么不同？
I worked at the hardware store this afternoon.
我今天下午在五金行工作。
If no other sate water supply can be obtained,
如果没有其他安全的饮用水，