Bipyramidal
双锥体
🗣️ 情景例句
Stone is still in the hospital, but he's making good progress.
世通还在医院，但他的身体康复得很快。
He has pamphlet.
他有一本小册子。
Everybody on board was worried and we were curious to find out what had happened.
飞机上的人都很着急，大家都急于想知道究竟出了什么事。