工作状态不佳？都怪二氧化碳
<p><span word="You">You</span> <span word="might">might</span> <span word="think">think</span> <span word="it">it</span>'<span word="s">s</span> <span word="your">your</span> <span word="colleagues">colleagues</span> <span word="or">or</span> <span word="the">the</span> <span word="pressures">pressures</span> <span word="of">of</span> <span word="work">work</span> <span word="that">that</span>'<span word="s">s</span> <span word="getting">getting</span> <span word="you">you</span> <span word="down">down</span> <span word="at">at</span> <span word="the">the</span> <span word="office">office</span>, <span word="but">but</span> <span word="new">new</span> <span word="research">research</span> <span word="suggests">suggests</span> <span word="it">it</span> <span word="could">could</span> <span word="well">well</span> <span word="be">be</span> <span word="the">the</span> <span word="air">air</span> <span word="you">you</span>'<span word="re">re</span> <span word="breathing">breathing</span> <span word="instead">instead</span>. <span word="Scientists">Scientists</span> <span word="in">in</span> <span word="the">the</span> <span word="US">US</span> <span word="have">have</span> <span word="found">found</span> <span word="that">that</span> <span word="the">the</span> <span word="concentration">concentration</span> <span word="of">of</span> <span word="carbon">carbon</span> <span word="dioxide">dioxide</span> <span word="inside">inside</span> <span word="the">the</span> <span word="confined">confined</span> <span word="spaces">spaces</span> <span word="we">we</span> <span word="use">use</span> <span word="every">every</span> <span word="day">day</span> <span word="could">could</span> <span word="be">be</span> <span word="high">high</span> <span word="enough">enough</span> <span word="to">to</span> <span word="damage">damage</span> <span word="our">our</span> <span word="health">health</span>.</p><p>你也许会认为是你的同事或者是工作压力让你在办公室里萎靡不振，但是新的研究说明可能只是办公室里的空气在作祟。美国的科学家发现我们每天所处的密闭空间中的高浓度二氧化碳会损害我们的健康。</p><p><span word="Of">Of</span> <span word="course">course</span>, <span word="it">it</span>'<span word="s">s</span> <span word="well">well</span> <span word="established">established</span> <span word="that">that</span> <span word="high">high</span> <span word="levels">levels</span> <span word="of">of</span> <span word="CO">CO</span>2 <span word="are">are</span> <span word="dangerous">dangerous</span>, <span word="not">not</span> <span word="just">just</span> <span word="for">for</span> <span word="human">human</span> <span word="beings">beings</span> <span word="but">but</span> <span word="for">for</span> <span word="the">the</span> <span word="planet">planet</span> <span word="as">as</span> <span word="a">a</span> <span word="whole">whole</span>, <span word="but">but</span> <span word="the">the</span> <span word="new">new</span> <span word="research">research</span> <span word="raises">raises</span> <span word="questions">questions</span> <span word="about">about</span> <span word="carbon">carbon</span> <span word="dioxide">dioxide</span> <span word="concentrations">concentrations</span> <span word="that">that</span> <span word="were">were</span> <span word="previously">previously</span> <span word="considered">considered</span> <span word="harmless">harmless</span>.</p><p>当然，地球人都知道二氧化碳浓度过高是危险的，不仅对人是这样，对地球也是如此。但是新的研究提出了这样一个问题，那就是之前被人们当作人畜无害的办公室二氧化碳的浓度问题。</p>
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