Aoa
abbr. 攻角；用箭頭表示活動（Activity on Arcs）
??? 情景例句
Where did you find the dog?
你在什么地方找到這只狗的呢？
One half of the world does not know how the other half lives.
貧富不相知。
No, we can ship in lots of any size.
沒有，任何數量都可以出貨。