为什么联合国要设立国际幸福日？

Why did the United Nations set up the International Day of Happiness?

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国际幸福日是什么时候？

When is the International Day of Happiness?

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你会因为知道3月20日是国际幸福日而感到高兴。

You will be happy to know that March 20th is the International Day of Happiness.

youdao

你会因为知道3月20日是国际幸福日而感到高兴。

You will be happy to know that March 20th is the International Day of Happiness.

youdao