Bov
abbr. 硫酸（brown oil of vitriol）
🗣️ 情景例句
I'm extremely sorry for the delay.
对此延误，我深感抱歉。
I know the boy whose father is a scentist.
我知道那个男孩的父亲是科学家。
No, I need to talk to the home office.
不，我得先跟总公司谈谈。