Conics
n. 锥线法, 锥线论
🗣️ 情景例句
It's mostly young people who take part.
参加活动的绝大多数是年青人。
I'm going to tell him what to do.
我正要告诉他应该如何做。
When they objected, they were killed.
他们反抗时就被杀害。