Op. cit.
abbr. 前面引用的书(in the work already quoted)
🗣️ 情景例句
the American Society for the Prevention of Cruelty to Animals.
美国禁止虐待动物协会。
The devil is not so black as he is painted.
魔鬼不像所描绘的那么黑。
I develop films myself.
我自己冲洗照片。