At the heart of Nelson Mandela International Day is volunteer work for people and the planet.

纳尔逊·曼德拉国际日的核心是为人类和地球开展志愿工作。

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At the heart of Nelson Mandela International Day is volunteer work for people and the planet.

纳尔逊·曼德拉国际日的核心是为人类和地球开展志愿工作。

youdao