Torsor
[數]非共面直線對
??? 情景例句
Having their origins in China, chopsticks are used in many Asian countries.
筷子起源于中國，現在很多的亞洲國家都使用它。
Will you speak up, please?
請你大聲一點好嗎？
Let's go and take a look at it.
讓我們去看看吧！