With 97% of the world's water too salty to be drunk or used in agriculture, the worldwide supply of water needs careful management, especially in agriculture.
由于世界上97%的水含盐量过高，不能饮用或用于农业，全世界的水供应需要谨慎管理，特别是在农业方面。
Above all, travellers should be very careful with food and water, including ice, and remember this simple rule: boil it, cook it, peel it, or forget it.
最重要的是，旅行者应对食物和水(包括冰)十分谨慎，并记住这一简单规则：煮沸，煮熟，削皮或忘掉。
Moreover, water-blessed countries have much less reason to be careful with their resources than the water-starved.
另外，在用水上具有得天独厚优势的国家在节约用水的热情上不如那些水资源贫瘠的国家。
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