Op. cit.
abbr. 前面引用的书(in the work already quoted)
🗣️ 情景例句
I am calling for the A company.
我是代表A公司打电话来的。
I checked my baggage in the baggage section.
我在行李房托运行李。
Frank begged him to do so and the dealer reluctantly prised it open.
经弗兰克恳求，古董商才勉强把货箱撬开了。