They should drink lots of pure water, eat four mini-meals a day rather than three large ones.

多喝纯净水，一天四顿的少食多餐绝对好过一日三餐的狼吞虎咽。

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Proper hydration is vital to good health and to have that, you need to drink pure water.

适当的水合作用对身体好是重要的，您需要喝纯净水。

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We need fresh air to breathe. We need pure water to drink. We need a clean environment to be healthy.

我们需要新鲜的空气来呼吸，我们需要纯净的水来饮用，我们需要一个干净的环境来保持健康。

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"Every child deserves to grow up with water that is pure to drink, lakes that are safe for swimming, rivers that are teeming with fish, " President Bill Clinton has said.

CNN: Environmental Legislation Going Nowhere Fast

"We have found a habitable environment which is so benign and supportive of life that if you had been on the planet, the water would have been pure enough to drink, " said planetary scientist John Grotzinger, at the California Institute of Technology, who is the mission's project scientist.

WSJ: Scientists Say Microbial Life Was Possible on Mars