With so few good original screenplays, it has been calculated that about 30 % of American movies in any given year are, like Jurassic Park and the English Patient, adapted from novels.
有人統計，美國電影每年大約有百分之三十改編自小說，《侏羅紀公園》、《英倫情人》等賣座西片都是先有小說，才有電影。