文学研究的,纯文学的
Belletristic \Bel`le*tris"tic\, Belletristical \Bel`le*tris"tic*al\, a. Occupied with, or pertaining to, belles-lettres. ``An unlearned, belletristic trifler.'' --M. Arnold.
belletristic adj : written and regarded for aesthetic value rather than content