Conics
n. 锥线法, 锥线论
🗣️ 情景例句
I'm Ellen Stewart, Marilyn's mother-in-law.
我叫Ellen Stewart， Marilyn的婆婆。
She was distinguished for her scientific achievements.
她因其科学成就而闻名。
how many heath fires they cause, how much litter they leave, in short,
即他们引起了多少场野火，留下了多少垃圾。总之，