op. cit.

劍橋詞典

used by writers to avoid repeating the details of a book or article that has already been referred to, when all the details other than the page number are the same
（用于避免重復(fù)前文提到的書或文章的細(xì)節(jié)）同上，同前文所引
Johnson (op. cit., page 53) calls this phenomenon "the principle of minimal effort ". 約翰遜（同上，第53頁）把這種現(xiàn)象稱為“最小努力原則”。
比較
loc. cit. 返回 op. cit.