Parallelehedra
平行面体
🗣️ 情景例句
I'd like to make an appointment with Miss Xu.
我想跟徐小姐约个会面的时间。
What will you do now?
现在你要怎么办？
The fire service began to wonder whether a gas might have caused the fire.
消防部门开始怀疑有一种气体可能会导致火灾。