Op. cit.
abbr. 前面引用的书(in the work already quoted)
🗣️ 情景例句
I studied medicine there.
我在那里学医学。
I suppose I can finish the project next year.
我想我明年完成此工程。
We're going to watch a football game. Would you like to come too?
我们打算看一场足球赛。你也来好吗？