什么是美国梦?要英文解释~~~字数200字左右

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.