幸福指数怎么计算,有什么标准吗,英文怎么说?
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幸福指数怎么计算,有什么标准吗,英文怎么说?
How to calculate the happiness exponent?What standard are there to be followed?
How to measure the index of happiness, are there some standards to be followed ?
How to rate happiness? Is there a standard.