Op. cit.
abbr. 前面引用的书(in the work already quoted)
🗣️ 情景例句
Here's something for you.
这有东西送你。
The girls all went crazy over him.
姑娘们都为他神魂颠倒。
At that moment Lucy came into the library.
正在那时候，露茜走进图书馆。