Lecture: 描述当代人口从大城市流向小城市的趋势，该趋势有两点好处：第一，把先进理念从大城市带到小城市。举的例子是他的一个在纽约住过的朋友，觉得纽约的bus service很好，于是回老家后建议人们完善当地的bus service。第二，提高小城市的经济和发展。举的例子还是那个朋友，回老家的时候发现当地的房子又好便宜，于是告诉他在纽约的熟人，然后可以吸引纽约的熟人来买老家的房子。
Contemporary people tend to move from big cities to smaller ones. There are two advantages for this trend. Firstly, it introduces the most advanced concepts to less developed cities. Take his friend for example. He used to live in New York and considered the bus service there complete and awesome. Therefore, after moving back to his hometown, he suggested the local area improve the bus service. Secondly, it promotes the economy and development in smaller cities. His friend found the houses in the local area were nice and cheap, so he told this to his acquaintance in New York, and they came to buy houses in the area. (108 words)
