Oos
(oo 的复数) abbr. 面向对象程式设计（Object Oriented）；已订购而尚未交货的（on order）
🗣️ 情景例句
Those were great days and we were very happy.
那些日子美好极了，我们过得很幸福。
From which station does the train leave?
这列火车从哪个站开出呢？
This is the school building.
这是学校大楼。