让留学生成瘾的“笑气”到底是啥？
<p>近日，一篇名为《留学生吸笑气成瘾 身体垮掉坐轮椅回国》的资讯报道引起社会关注，文章中，一位在美国留学的中国女生因为偶然机会经朋友推荐吸食笑气后，便一发不可收拾，吸食成瘾，导致身体机能受损，最终只能中断学业，坐着轮椅回国。</p><p><span word="Chinese">Chinese</span> <span word="student">student</span> <span word="Lin">Lin</span> <span word="Na">Na</span> (<span word="not">not</span> <span word="her">her</span> <span word="real">real</span> <span word="name">name</span>) <span word="got">got</span> <span word="hooked">hooked</span> <span word="on">on</span> <span word="laughing">laughing</span> <span word="gas">gas</span> <span word="while">while</span> <span word="studying">studying</span> <span word="in">in</span> <span word="the">the</span> <span word="U">U</span>.<span word="S">S</span>., <span word="resulting">resulting</span> <span word="in">in</span> <span word="serious">serious</span> <span word="injury">injury</span>.</p><p>中国学生林娜（化名）在美国学习期间吸食笑气成瘾，导致身体机能严重受损。</p><p>笑气（<span word="laughing">laughing</span> <span word="gas">gas</span>），学名一氧化二氮（<span word="nitrous">nitrous</span> <span word="oxide">oxide</span>），在室温下是无色（<span word="colorless">colorless</span>）、无味的不可燃气体（<span word="odorless">odorless</span> <span word="non">non</span>-<span word="flammable">flammable</span> <span word="gas">gas</span>）。温度升高后，可成为很强的氧化剂（<span word="powerful">powerful</span> <span word="oxidizer">oxidizer</span>）。</p><p>因为具有麻醉效果（<span word="anaesthetic">anaesthetic</span> <span word="effects">effects</span>），一氧化二氮曾经被广泛应用于外科和牙科治疗；也因为吸入此气体之后，人会产生愉悦的感觉（<span word="euphoric">euphoric</span> <span word="effects">effects</span>），所以才会得名“笑气”。此外，一氧化二氮还可用作火箭推进剂中的氧化剂（<span word="oxidizer">oxidizer</span> <span word="in">in</span> <span word="rocket">rocket</span> <span word="propellants">propellants</span>），以及赛车时提升发动机的动力输出（<span word="increase">increase</span> <span word="the">the</span> <span word="power">power</span> <span word="output">output</span> <span word="of">of</span> <span word="engines">engines</span>）。</p><p>据媒体报道，年轻人吸食“笑气”时先将气体冲进气球，然后抱着气球吸食，这种气球被称为“嗨气球”（<span word="dizzy">dizzy</span> <span word="balloons">balloons</span>）。</p><p>“笑气”进入血液后会导致人体缺氧，长期吸食可能引起高血压（<span word="high">high</span> <span word="blood">blood</span> <span word="pressure">pressure</span>）、晕厥（<span word="syncope">syncope</span>），甚至心脏病发作（<span word="heart">heart</span> <span word="attack">attack</span>）。长期接触此类气体还可引起贫血（<span word="anemia">anemia</span>）及中枢神经系统损害（<span word="central">central</span> <span word="nervous">nervous</span> <span word="system">system</span> <span word="injury">injury</span>）等。如果超量摄入，很可能因为缺氧导致窒息死亡（<span word="die">die</span> <span word="of">of</span> <span word="suffocation">suffocation</span>）。</p>
页:
[1]