Quadric
a. 二次的\\nn. 二次曲面
??? 情景例句
And I'll be able to show you around our city.
我可以帶你在我們那兒四處看看。
I wonder if you are on my side.
我不知道你是否站在我這邊。
Fortunately people want to come and hear me play, but I am getting very tired of travelling.
幸運(yùn)的是，人們都想來聽我演奏，但是我對(duì)旅行感到厭倦了。