美国文化在过去的几十年里，变化得很多，因为美国的人口越来越复杂。过去二十年来，从非洲、拉丁美洲、亚洲来的移民，多得很。移民多了以后，人口的成分就变了。已经有人预言，到了２０５０年，也就是５０年以后，美国已经不是我们印象中所想象的一个白人的国家。到那个... American culture has changed a lot in the past few decades because of the increasingly complex population in the United States. Over the past two decades, immigrants from Africa, Latin America and Asia have done very well. After more immigrants, the composition of the population has changed. It has been predicted by the year 2050, which is 50 years later, that the United States is no longer a white nation as imagined in our images. To that ...