Water is thought to be crucial for life because it provides a medium for nutrients to diffuse into cells and wastes to drift out, and a solvent for critical metabolic reactions.
水被认为对生命是至关重要的，因为水是营养物渗入细胞以及废物排出的媒介，也是关键新陈代谢反应的溶剂。
2
German researchers found that six cups of cold water a day could prompt a metabolic boost that incinerates 50 daily calories.
德国研究者发现每天饮6杯冰水将提升你的新陈代谢水平，每天多消耗掉50卡路里。
3
Water flow can affect structure of the community and species distribution, as well as the production, metabolic processes and morphological characteristics of macrophytes.