A number of people prefer to live in countryside because they consider that living in big cities has many disadvantages. 许多人喜欢住在农村，因为他们觉得生活在大城市有很多的劣势。

A number of people prefer to live in countryside because they consider that living in big cities has many disadvantages.
许多人喜欢住在农村，因为他们觉得生活在大城市有很多的劣势。
First of all, the most obvious problem is traffic. In big cities, traffic jam is quite common everywhere, especially in the rush time. And a large number of people have to spend a great deal of time in going to work and coming back from work. In addition, traffic accident is another threat. 
首先，最明显的问题是交通。在大城市里，到处交通堵塞是很常见的现象，尤其是高峰期。很多人不得不花费大量的时间在上下班的途中。此外，交通事故也是另一个威胁。
Second, with the increase of cars and buses in big cities, air pollution has become another disadvantage of living in big cities. Besides, a growing number of factory have also accounted for air pollution in big cities. Consequently, many diseases caused by air pollution are emerging in an endless stream. 
第二，随着大城市的汽车和公交车数量的增加，空气污染已成为在大城市生活的另一个劣势。此外，越来越多的工厂也导致了大城市空气污染。因此，很多疾病通过空气传播造成了无止境的污染。
Finally, another image of big cities is relative to noise, such as the noise of transportation, the noise of construction and so on. 
最后，大城市的另一个形象是噪音，如交通噪声，施工噪声等。
In a word, living in big cities has many advantages but also disadvantages. And living in big cities or countryside should depend on our personal preference and needs.
总之，生活在大城市有很多优点，不过也有很多缺点。生活在大城市或农村都应该是取决于我们个人的喜好与需求。