Bipyramid
[机] 双锥体
🗣️ 情景例句
What subject did you major in university?
你在大学主修的科目是什么？
He is having a nightmare.
他在做着噩梦。
Debbie's father will set out with her in a small boat.
黛比的父亲将乘一条小船同她一道出发。