Conics
n. 锥线法, 锥线论
🗣️ 情景例句
I think I'll need your expert assistance this afternoon.
我想，我今天下午需要你专业的协助。
He recommended me for the post of principal.
他推荐我担任校长。
Let 's see, that means a 2% discount if paid within ten days.
哦。那是说如果10天内付款，有2%的折扣。