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
Is something the matter, Grandpa?
怎么了，爷爷？
Don't forget to write to let us know you arrived safely.
不要忘记写信回来，告诉我们你已经安全抵达。
She knew that it must be the baker.
她知道来了一定面包师。