名词
中文翻译：痛苦指数
同义词：
['sadness index', 'unhappiness index']
例句：
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1.The misery index for the country has dropped significantly since the government implemented its new policies.
自从政府实施了新政策，该国的悲伤指数大幅下降。
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2. The research team found that the misery index was closely related to the level of unemployment.
研究小组发现，悲伤指数与失业率水平密切相关。
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3. The misery index is used to measure the overall well-being of a population.
悲伤指数被用来测量人口的整体福祉。