世界卫生组织：空气污染致癌
<p><span word="Fresh">Fresh</span> <span word="air">air</span> <span word="polluted">polluted</span> <span word="by">by</span> <span word="exhaust">exhaust</span> <span word="fumes">fumes</span> <span word="and">and</span> <span word="industrial">industrial</span> <span word="emissions">emissions</span> <span word="causes">causes</span> <span word="lung">lung</span> <span word="cancer">cancer</span>, <span word="a">a</span> <span word="team">team</span> <span word="of">of</span> <span word="World">World</span> <span word="Health">Health</span> <span word="Organisation">Organisation</span> <span word="experts">experts</span> <span word="has">has</span> <span word="officially">officially</span> <span word="declared">declared</span>.</p><p><span word="Outdoor">Outdoor</span> <span word="air">air</span> <span word="pollution">pollution</span> <span word="was">was</span> <span word="officially">officially</span> <span word="classified">classified</span> <span word="as">as</span> <span word="carcinogenic">carcinogenic</span> <span word="to">to</span> <span word="humans">humans</span> <span word="by">by</span> <span word="the">the</span> <span word="cancer">cancer</span> <span word="arm">arm</span> <span word="of">of</span> <span word="the">the</span> <span word="WHO">WHO</span> <span word="after">after</span> <span word="a">a</span> <span word="review">review</span> <span word="of">of</span> <span word="the">the</span> <span word="latest">latest</span> <span word="scientific">scientific</span> <span word="evidence">evidence</span> <span word="from">from</span> <span word="around">around</span> <span word="the">the</span> <span word="world">world</span>.</p><p><span word="The">The</span> <span word="International">International</span> <span word="Agency">Agency</span> <span word="for">for</span> <span word="Research">Research</span> <span word="on">on</span> <span word="Cancer">Cancer</span> (<span word="IARC">IARC</span>) <span word="also">also</span> <span word="highlighted">highlighted</span> <span word="an">an</span> <span word="apparent">apparent</span> <span word="link">link</span> <span word="between">between</span> <span word="air">air</span> <span word="pollution">pollution</span> <span word="and">and</span> <span word="an">an</span> <span word="increased">increased</span> <span word="risk">risk</span> <span word="of">of</span> <span word="bladder">bladder</span> <span word="cancer">cancer</span>, <span word="although">although</span> <span word="the">the</span> <span word="findings">findings</span> <span word="were">were</span> <span word="less">less</span> <span word="conclusive">conclusive</span>.</p><p><span word="Levels">Levels</span> <span word="of">of</span> <span word="pollution">pollution</span> <span word="vary">vary</span> <span word="widely">widely</span> <span word="between">between</span> <span word="urban">urban</span> <span word="and">and</span> <span word="rural">rural</span> <span word="areas">areas</span>, <span word="but">but</span> <span word="the">the</span> <span word="working">working</span> <span word="group">group</span> <span word="said">said</span> <span word="their">their</span> <span word="findings">findings</span> <span word="applied">applied</span> <span word="to">to</span> <span word="all">all</span> <span word="regions">regions</span> <span word="of">of</span> <span word="the">the</span> <span word="world">world</span>, <span word="and">and</span> <span word="sent">sent</span> <span word="a">a</span> “<span word="strong">strong</span> <span word="signal">signal</span>” <span word="to">to</span> <span word="governments">governments</span> <span word="to">to</span> <span word="tackle">tackle</span> <span word="the">the</span> <span word="problem">problem</span> <span word="immediately">immediately</span>.</p>
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