名词中文翻译
中文翻译：索引
同义词：
['measure', 'index', 'reference point']
例句：
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1. The index of the stock market hasbeen rising steadily for the past month.
过去一个月，股市的指数一直在稳步上升。
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2.The index of the economy is closely watchedby economists around the world.
经济指数受到全世界经济学家的密切关注。
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3. Theindex of happiness is ameasure of how people feel abouttheir lives.
幸福指数是衡量人们对自己生活感受的一个指标。