在世界的那个地方，洁净的水是宝贵的东西。

Clean water is a precious commodity in that part of the world.

《牛津词典》

据说，经济发展会使世界更洁净？

It is saying that economic development should make for a cleaner world?

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我鼓励每一个人把世界水日看作是重申他们承诺的另一个机会，向所有有所需求的人提供洁净安全的水。

I urge everyone to look at World water Day as another occasion to renew their commitment to providing clean, safe water to all who need it.

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