瑞典研发新机 能把汗水变成饮用水
<p>在瑞典，一部能够从浸满汗水的衣服上提取出安全纯净饮用水的汗水提取机进入了人们的视线。这部机器通过高速旋转和加热待提取的衣服，从而使汗水变成蒸汽与衣物分离，再经过一层特殊设计的过滤网，让水分子得以通过，而细菌、衣物纤维等物质被隔离开来，如此就提取到了据称比当地自来水还要清洁的饮用水。这部机器为联合国儿童基金会设计，旨在让人们认识到世界上还有7.8亿人口仍然面临干净饮用水短缺的问题。该机器亮相以来，已有超过一千位哥德堡市民喝过“别人的汗水”。</p><p>汗水提取机的设计者表示，该机器的原理类似于国际太空站的尿液净化循环系统，但造价却低廉很多。不过，该项设计的局限在于，产出的水量太少。正常情况下从一件汗湿的<span word="T">T</span>恤上所提取出的汗水只够转化成10毫升饮用水，仅够“喝一口”。此次活动组织方负责人表示，汗水的供应量永远都跟不上人们对饮用水的需求量，解决饮用水短缺的问题可能有别的更好的办法，比如水净化药剂。</p><p><span word="A">A</span> <span word="machine">machine</span> <span word="that">that</span> <span word="takes">takes</span> <span word="sweat">sweat</span>-<span word="laden">laden</span> <span word="clothes">clothes</span> <span word="and">and</span> <span word="turns">turns</span> <span word="the">the</span> <span word="moisture">moisture</span> <span word="into">into</span> <span word="drinking">drinking</span> <span word="water">water</span> <span word="is">is</span> <span word="in">in</span> <span word="use">use</span> <span word="in">in</span> <span word="Sweden">Sweden</span>.</p><p><span word="The">The</span> <span word="device">device</span> <span word="spins">spins</span> <span word="and">and</span> <span word="heats">heats</span> <span word="the">the</span> <span word="material">material</span> <span word="to">to</span> <span word="remove">remove</span> <span word="the">the</span> <span word="sweat">sweat</span>, <span word="and">and</span> <span word="then">then</span> <span word="passes">passes</span> <span word="the">the</span> <span word="vapour">vapour</span> <span word="through">through</span> <span word="a">a</span> <span word="special">special</span> <span word="membrane">membrane</span> <span word="designed">designed</span> <span word="to">to</span> <span word="only">only</span> <span word="let">let</span> <span word="water">water</span> <span word="molecules">molecules</span> <span word="get">get</span> <span word="through">through</span>.</p><p><span word="Since">Since</span> <span word="its">its</span> <span word="Monday">Monday</span> <span word="launch">launch</span>, <span word="its">its</span> <span word="creators">creators</span> <span word="say">say</span> <span word="more">more</span> <span word="than">than</span> 1,000 <span word="people">people</span> <span word="have">have</span> "<span word="drunk">drunk</span> <span word="other">other</span>'<span word="s">s</span> <span word="sweat">sweat</span>" <span word="in">in</span> <span word="Gothenburg">Gothenburg</span>.</p>
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