Bipyramidal
双锥体
🗣️ 情景例句
You bet I do!
你可以打赌我当然认识。
Don't forget to cable to let us know you arrived safely.
不要忘记在你安全地到达后打电报让我们知道。
We'd better not just talk; let's go to the river to bathe.
我们最好别光顾说了；咱们去河里游泳吧。