In the US, upward mobility is more myth than reality, whereas downward mobility and vulnerability is a widely shared experience. This is partly because of America’s health-care system, which still leaves poor Americans in a precarious position, despite President Barack Obama’s reforms.
在美国，向上流动与其说是现实，不如说是传说；而向下流动性和脆弱性倒是比比皆是。这部分是拜美国医疗制度所赐，尽管奥巴马总统实施了改革，但这套制度仍让美国穷人处于相当危险的境地。