求翻译：美国在战争中发了横财，战后，物质生产发展很快， 生活水平迅速提高， 中产阶级人数增长很快。但广大人民的精神生活却越来越贫乏、空虚。美国有的当代史学家把美国50年代称为“静寂的50年代”或“怯懦的50年代”。是什么意思？

The United States in the war made a fortune and soon after the war, the development of material production, the rapid improvement of living standards, the middle class has grown rapidly. But the majority of the people's spiritual life has become increasingly poor, empty. Some contemporary historians

In the United States made a fortune in the war, the post-war, and the material production is growing rapidly, living standards have improved, and fast-growing number of middle class people. But the overwhelming majority of the spiritual life is increasingly scarce, emptiness. The United States has a

US pays dirt in the war, postwar, the physical production development is very quick, the living standard rapid enhancement, the middle class population growth is very quick.But the general populace's spiritual life more and more is actually deficient void.US has the contemporary historian is called

United States made a windfall in the war after the war, development of material production quickly, rapidly improving standards of living, rising middle class is increasing very fast. But the spiritual life of the masses of people are increasingly poor and empty. United States some contemporary hist

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