Conics
n. 锥线法, 锥线论
🗣️ 情景例句
That's very nice of you. Where did you get it? It's not a print.
真细心！你从哪儿弄来的？这还不是复制的呢！
It's a shame these instructions are so complicated.
真遗憾，这些说明太复杂了。
Here is my ticket.
这是我（寄存东西）的牌子。