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.

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。

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The causes of this phenomenon include defects in the economic structure, a rigid foreign exchange regime, early-coming financial liberalization, the high budget deficit and high foreign debt.

这一现象归因于结构缺陷、汇率制度僵化、过早金融自由化、高度财政赤字化和债务化等多个方面。

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