求翻译：美国是一个移民国家，美国的移民来自世界的各个角落：欧洲、南美、非洲、亚洲等等，每个移民族群本来都有自己的文化，美国社会不排斥这些文化，不同的文化在美国开放、自由、民主、法制的环境里融合形成多元的美国文化。这就像一个大熔炉把不同文化融合在一起。是什么意思？

The United States is a nation of immigrants, the United States, immigrants from every corner of the world: Europe, South America, Africa, Asia, and so on, every immigrant population originally has its own culture, American society does not exclude these cultures, different cultures in the U.S. Open

The United States is a nation of immigrants in the United States, immigrants came from every corner of the world: Europe, South America, Africa, Asia, and so on, each of which could have been to ethnic groups have their own culture, and society of the United States is not excluded from these culture

US is an immigrant country, US's immigration comes from world each quoin: Europe, South America, Africa, Asia and so on, each immigrant tribal grouping tribal groups all have own culture originally, the American society do not repel these cultures, the different culture opens, the freedom, the democ

United States is a country of immigration, United States immigrants from every corner of the world: Europe, Asia, South America, Africa, and so on, every immigrant ethnic group has its own culture, United States social exclusion of these cultures, of different cultures in the United States open, in