Planoid
超平面
🗣️ 情景例句
May I take a picture of you and your little boy?
我可以替你和你的小男孩拍一张照吗？
He is in difficulty in his business.
他在事业上遇到困难了。
has spent his lifetime studying active volcanoes and deep caves in all parts of the world.
花了毕生的精力来研究世界各地的活火山和探洞。