Conicograph
二次曲线规
🗣️ 情景例句
If you find it unworkable, we have no other choice but to call the deal off.
如果不行的话，我们只好放弃了。
It is too late to cast anchor when the ship is on the rock.
船触礁后在抛锚，为时已经太晚了。
Yes, I am.
是的，我是法国人。