摘要
同学们，欢迎大家踊跃参加“2014年全国中学生英语翻译大赛”!请将下面这篇文章翻译成汉语。（具体参赛事宜请参见本刊2014年第10期（上半月刊）封二“2014年全国中学生英语翻译大赛启事”。）
There are more than six billion people on Earth. Groups of people with similar beliefs and ways of living share a culture. The ways of a group are their customs. A custom in Saudi Arabia and Iran is for women to be covered when they are in public places. In China, people say their last names first in order to honor their family names.
