Oo
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
Sir, I thought this was an emergency.
先生，我想这是一位急病患者。
It's earier to run down the hill than go up.
下山容易上山难。
But I was delighted to be able to say words that my family and a few friends could understand.
是，我却感到欣喜，能够说出我家里人和一些朋友可以理解的词语。