名词
中文翻译：相对收入差异
同义词：
['relative income gap', 'relative income disparity']
例句：
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1. The relative income difference between the two countries is significant.
两国之间的相对收入差异是显著的。
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2. The government has been working to narrow this relative income difference.
政府一直在努力缩小这种相对收入差异。
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3.The relative income difference between the rich and the poor is a pressing issue in many countries.
富人和穷人之间的相对收入差异是许多国家的一个紧迫问题。