经济阶层
先理解核心含义，再看它在真实句子里的用法。
经济阶层
a group of people sharing a similar level of income or wealth
People from different economic classes often have different opportunities.
来自不同经济阶层的人常常拥有不同的机会。
经济阶层
a group of people sharing a similar level of income or wealth
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Dictionary facts from AI_SUPPLEMENT.