Tetartohedron
四分面体
🗣️ 情景例句
We had a good day.
我们今天玩得很开心。
The doctor says that I should take quinine.
医生说我应该服用奎宁。
He built a glass wall through which he could watch what went on inside.
他建造一堵玻璃墙，透过玻璃墙他能够观察里面发生的事情。