然而，在美国社会，阶级结构没有那么严格；有些人很轻易地就改变了职业，并认为提高他们的社会和经济地位是他们自己的责任。

In American society, however, the class structure was less rigid; some people changed occupations easily and believed it was their duty to improve their social and economic position.

youdao

我认为，日本是一个有集体意识的社会，所有人都是中产阶级，大家的命运休戚相关，收入没有巨大的差距。

I think in Japan there was a collective identity as a society where everyone is middle class, everybody shares the same fate, there are not huge, wide disparities of income.

youdao

美国在全球中产阶级社会乃至文化领域的影响力正在不断削弱，虽然美国中产阶级人口并没有因此而消减。

America's hold on global middle class society and even culture is eroding, though not at the expense of the U.S. middle class population.

youdao