大热天跳到冷水中或致命,即使你会游泳
<p><span word="It">It</span>'<span word="s">s</span> <span word="a">a</span> <span word="scenario">scenario</span> <span word="many">many</span> <span word="of">of</span> <span word="us">us</span> <span word="daydream">daydream</span> <span word="about">about</span> <span word="during">during</span> <span word="a">a</span> <span word="heat">heat</span> <span word="wave">wave</span> <span word="while">while</span> <span word="stuck">stuck</span> <span word="in">in</span> <span word="a">a</span> <span word="badly">badly</span> <span word="ventilated">ventilated</span> <span word="office">office</span> <span word="or">or</span> <span word="on">on</span> <span word="a">a</span> <span word="stuffy">stuffy</span> <span word="commute">commute</span>. <span word="Being">Being</span> <span word="able">able</span> <span word="to">to</span> <span word="cool">cool</span> <span word="down">down</span> <span word="by">by</span> <span word="plunging">plunging</span> <span word="into">into</span> <span word="a">a</span> <span word="cold">cold</span> <span word="lake">lake</span> <span word="or">or</span> <span word="have">have</span> <span word="a">a</span> <span word="dip">dip</span> <span word="in">in</span> <span word="the">the</span> <span word="sea">sea</span> <span word="sounds">sounds</span> <span word="pretty">pretty</span> <span word="blissful">blissful</span> <span word="when">when</span> <span word="temperatures">temperatures</span> <span word="peak">peak</span> <span word="at">at</span> 31.9<span word="C">C</span>.</p><p>大热天被困在通风不好的办公室或闷热的交通工具中时，我们都会幻想这样的场景：当气温高达31.9度时，能够跳到冰凉的河水中或在海中畅游降暑。</p><p><span word="But">But</span> <span word="while">while</span> <span word="this">this</span> <span word="may">may</span> <span word="sound">sound</span> <span word="fun">fun</span> <span word="and">and</span> <span word="refreshing">refreshing</span>, <span word="it">it</span> <span word="can">can</span> <span word="actually">actually</span> <span word="be">be</span> <span word="incredibly">incredibly</span> <span word="dangerous">dangerous</span> - <span word="deadly">deadly</span> <span word="even">even</span>. <span word="This">This</span> <span word="is">is</span> <span word="because">because</span> <span word="at">at</span> <span word="the">the</span> <span word="root">root</span> <span word="of">of</span> <span word="large">large</span> <span word="number">number</span> <span word="of">of</span> <span word="drownings">drownings</span> <span word="is">is</span> <span word="cold">cold</span> <span word="water">water</span> <span word="shock">shock</span>. <span word="A">A</span> <span word="condition">condition</span> <span word="which">which</span> <span word="is">is</span> <span word="rarely">rarely</span> <span word="discussed">discussed</span>, <span word="cold">cold</span> <span word="water">water</span> <span word="shock">shock</span> <span word="can">can</span> <span word="trigger">trigger</span> <span word="a">a</span> <span word="deadly">deadly</span> <span word="heart">heart</span> <span word="attack">attack</span>. <span word="You">You</span> <span word="may">may</span> <span word="not">not</span> <span word="think">think</span> <span word="anything">anything</span> <span word="of">of</span> <span word="having">having</span> <span word="a">a</span> <span word="refreshing">refreshing</span> <span word="swim">swim</span> <span word="in">in</span> <span word="the">the</span> <span word="cold">cold</span> <span word="water">water</span>, <span word="but">but</span> <span word="with">with</span> <span word="the">the</span> <span word="average">average</span> <span word="temperature">temperature</span> <span word="of">of</span> <span word="the">the</span> <span word="sea">sea</span> <span word="off">off</span> <span word="UK">UK</span> <span word="shores">shores</span> <span word="between">between</span> 10 <span word="to">to</span> 15<span word="C">C</span>, <span word="the">the</span> <span word="RNLI">RNLI</span> <span word="warn">warn</span> <span word="this">this</span> <span word="is">is</span> <span word="in">in</span> <span word="fact">fact</span> <span word="cold">cold</span> <span word="enough">enough</span> <span word="to">to</span> <span word="cause">cause</span> <span word="cold">cold</span> <span word="water">water</span> <span word="shock">shock</span>.</p><p>虽然这听起来令人身心舒畅，但实际上却非常危险--甚至会致命。这是因为大量溺水事件的根本原因在于冷水冲击。很少有人谈论这一情况，但冷水冲击可能会引发致命的心脏病发作。也许，你并没有打算在冰冷的河中游泳，但英国海岸海水的平均温度为10至15度，英国皇家全国救生艇协会警告称，这种温度足以导致冷水冲击。</p>
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