1. An exodus of cars from the city every evening.
    每天傍晚大批汽车从城里开出来.

2. All through the developing word the vanguard of the rural exodus has reached the urban fringes already.
    在整个发展中的世界里，退出农村而向城市科迁徙的先锋已经到达了城市的边缘。