O
interj. 啊, 唉, 哎呀, 哦\\nn. 零\\n[计] 操作, 运算, 输出
✅ 同义词
🏥 医学释义
……点钟
🗣️ 情景例句
Why are you back so early?
你们怎么这么早回来？
To construct a building
建造大楼
What's the matter with him?
他怎么啦？