名词
中文翻译：收入光谱
同义词：
['income spectrum', 'income distribution', 'income distribution curve']
例句：
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1. The economists are studying the income spectrum of different countries to understand their economic development trends.
经济学家们正在研究不同国家的收人分布，以了解其经济发展的趋势。
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2. The income spectrum is a crucial factor in determining the purchasing power of individuals and households.
收入谱系是决定个人和家庭购买力的关键因素。
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3.The income spectrum is often used to analyze the income distribution of a country or region.
收入谱系通常用于分析一个国家或地区的收入分配情况。