belles-lettres
noun /ˌbel ˈletrə/
/ˌbel ˈletrə/
[uncountable + singular or plural verb] (from French, old-fashioned)- studies or writings on the subject of literature or art, contrasted with those on technical or scientific subjects
纯文学,美文学,美文(指有别于科技题材的文学或艺术研究或作品) 词源mid 17th cent.: from French, literally ‘fine letters’.