Quadrics
二次型
🗣️ 情景例句
You know I'm very excited about his arrival.
知道我对他的到来是多么兴奋。
Could you explain how to fill this out?
请你说明一下怎样填这张表好吗？
So there were many people in the doctor's waiting room.
所以医生的候诊室里有很多人。