single-bookBNC²³⁶²¹³⁺¹ 例句 The former includes two grade-2 subjects, that is, Chinese classical philology and modern philology; the latter has three grade-2 subjects, that is, specialism, monographic and single-book philology. 前者包括中国古典文献学与现代文献学两个二级学科，后者包括专科文献学、专题文献学、专书文献学三个二级学科。 cnki