逃离战场的背叛者甾体和非甾体的区别

　　An upper-class corporal from Paris is captured by the Germans when they invade France in 1940. Assisted and accompanied by characters as diverse as a morose dairy farmer, a waiter, a myopic intellectual, a working-class Parisian, and a German dental assistant, the corporal tries to escape from prison camps, sometimes making it a few yards, sometimes reaching the French border.