什么是美国梦？？？要英文解释~~~字数200字左右

http://pdf.sznews.com/szdaily/2001/0226s/7.htm
American dream

美国梦
California is full for foreign immigrants who came to the US to share the American dream, a popular belief that hard work will bring forth America's bounty in the form of material well-being.
加州有许多外国移民，他们来美国是为了分享美国梦，即一种广为接受的信仰，认为在美国只要奋斗就能成为富翁。