万万没想到：人人都吃土，每年3.6万毫克
<p><span word="We">We</span> <span word="all">all</span> <span word="know">know</span> <span word="we">we</span> <span word="shouldn">shouldn</span>'<span word="t">t</span> <span word="eat">eat</span> <span word="dirt">dirt</span>, <span word="but">but</span> <span word="we">we</span> <span word="do">do</span> <span word="it">it</span> <span word="anyway">anyway</span>. <span word="Mostly">Mostly</span> <span word="not">not</span> <span word="on">on</span> <span word="purpose">purpose</span> – <span word="dirt">dirt</span> <span word="gets">gets</span> <span word="into">into</span> <span word="our">our</span> <span word="bodies">bodies</span> <span word="all">all</span> <span word="day">day</span>, <span word="every">every</span> <span word="day">day</span>, <span word="whether">whether</span> <span word="we">we</span> <span word="want">want</span> <span word="it">it</span> <span word="to">to</span> <span word="or">or</span> <span word="not">not</span>. <span word="It">It</span>'<span word="s">s</span> <span word="understandably">understandably</span> <span word="difficult">difficult</span> <span word="to">to</span> <span word="figure">figure</span> <span word="out">out</span> <span word="exactly">exactly</span> <span word="how">how</span> <span word="much">much</span> <span word="is">is</span> <span word="getting">getting</span> <span word="in">in</span>, <span word="but">but</span> <span word="that">that</span> <span word="might">might</span> <span word="be">be</span> <span word="beside">beside</span> <span word="the">the</span> <span word="point">point</span>.</p><p>我们都知道不该吃灰尘，但总会吃到。大多数时候都不是故意的——不管我们想不想，灰尘每天都从早到晚地进入我们体内。可以理解，想要准确计算我们每天吸入多少灰尘是很难的，但这并不重要。</p><p><span word="We">We</span> <span word="get">get</span> <span word="our">our</span> <span word="daily">daily</span> <span word="dirt">dirt</span> <span word="allowance">allowance</span> <span word="in">in</span> <span word="all">all</span> <span word="kinds">kinds</span> <span word="of">of</span> <span word="ways">ways</span>, <span word="from">from</span> <span word="contaminated">contaminated</span> <span word="food">food</span>, <span word="dust">dust</span> <span word="inhalation">inhalation</span>, <span word="and">and</span> <span word="from">from</span> <span word="not">not</span> <span word="washing">washing</span> <span word="our">our</span> <span word="hands">hands</span> <span word="before">before</span> <span word="eating">eating</span>. <span word="The">The</span> <span word="Environmental">Environmental</span> <span word="Protection">Protection</span> <span word="Agency">Agency</span> (<span word="EPA">EPA</span>) <span word="has">has</span> <span word="compiled">compiled</span> <span word="an">an</span> <span word="enormous">enormous</span> <span word="amount">amount</span> <span word="of">of</span> <span word="research">research</span> <span word="on">on</span> <span word="dirt">dirt</span> <span word="consumption">consumption</span>. <span word="About">About</span> 45 <span word="percent">percent</span> <span word="of">of</span> <span word="the">the</span> <span word="stuff">stuff</span> <span word="we">we</span> <span word="inhale">inhale</span> <span word="or">or</span> <span word="inadvertently">inadvertently</span> <span word="eat">eat</span> <span word="is">is</span> <span word="soil">soil</span>, <span word="and">and</span> 55 <span word="percent">percent</span> <span word="is">is</span> <span word="dust">dust</span>.</p><p>我们每天以各种方式吸入灰尘，通过脏的食物、吸入的尘土、还可能是因为吃东西之前没洗手。环境保护署汇集了大量关于吸入灰尘的研究，我们吸入或无意间吃下去的大约45%是土，55%是灰尘。</p><p><span word="The">The</span> <span word="EPA">EPA</span> <span word="numbers">numbers</span> <span word="on">on</span> <span word="unintentional">unintentional</span> <span word="dirt">dirt</span> <span word="consumption">consumption</span> <span word="focus">focus</span> <span word="on">on</span> <span word="children">children</span>, <span word="with">with</span> <span word="one">one</span> <span word="study">study</span> <span word="reporting">reporting</span> <span word="that">that</span> <span word="babies">babies</span> <span word="from">from</span> 6 <span word="weeks">weeks</span> <span word="to">to</span> 1 <span word="year">year</span> <span word="old">old</span> <span word="generally">generally</span> <span word="get">get</span> 60 <span word="milligrams">milligrams</span> <span word="a">a</span> <span word="day">day</span>. <span word="From">From</span> <span word="ages">ages</span> 1 <span word="to">to</span> 20, <span word="that">that</span> <span word="amount">amount</span> <span word="goes">goes</span> <span word="up">up</span> <span word="to">to</span> 100 <span word="milligrams">milligrams</span> <span word="a">a</span> <span word="day">day</span>. <span word="If">If</span> <span word="you">you</span> <span word="take">take</span> <span word="those">those</span> <span word="daily">daily</span> <span word="numbers">numbers</span> <span word="and">and</span> <span word="make">make</span> <span word="them">them</span> <span word="annual">annual</span>, <span word="that">that</span> <span word="would">would</span> <span word="be">be</span> 36,500 <span word="milligrams">milligrams</span> <span word="or">or</span> 1.3 <span word="ounces">ounces</span> <span word="per">per</span> <span word="year">year</span>.</p>
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