人类终于开始清理太空垃圾了，不然隐患甚大
<p><span word="Wherever">Wherever</span> <span word="we">we</span> <span word="humans">humans</span> <span word="go">go</span>, <span word="we">we</span> <span word="leave">leave</span> <span word="behind">behind</span> <span word="a">a</span> <span word="mess">mess</span>. <span word="That">That</span> <span word="goes">goes</span> <span word="for">for</span> <span word="space">space</span>, <span word="too">too</span>.</p><p>人类所到之处都是一片狼藉，太空也不例外。</p><p><span word="Today">Today</span>, <span word="our">our</span> <span word="species">species</span> <span word="is">is</span> <span word="responsible">responsible</span> <span word="for">for</span> <span word="more">more</span> <span word="than">than</span> 500,000 <span word="pieces">pieces</span> <span word="of">of</span> <span word="junk">junk</span> <span word="hurtling">hurtling</span> <span word="around">around</span> <span word="Earth">Earth</span> <span word="at">at</span> <span word="phenomenal">phenomenal</span> <span word="speeds">speeds</span>, <span word="and">and</span> <span word="if">if</span> <span word="we">we</span> <span word="don">don</span>'<span word="t">t</span> <span word="start">start</span> <span word="actively">actively</span> <span word="removing">removing</span> <span word="the">the</span> <span word="largest">largest</span> <span word="pieces">pieces</span>, <span word="the">the</span> <span word="risk">risk</span> <span word="of">of</span> <span word="collisions">collisions</span> <span word="will">will</span> <span word="only">only</span> <span word="grow">grow</span> <span word="worse">worse</span>.</p><p>现在人类要为超过500,000个绕地球高速飞行的垃圾负责，如果我们再不积极行动起来清理大型垃圾，碰撞的危险只会越来越大。</p><p>"<span word="Imagine">Imagine</span> <span word="how">how</span> <span word="dangerous">dangerous</span> <span word="sailing">sailing</span> <span word="the">the</span> <span word="high">high</span> <span word="seas">seas</span> <span word="would">would</span> <span word="be">be</span> <span word="if">if</span> <span word="all">all</span> <span word="the">the</span> <span word="ships">ships</span> <span word="ever">ever</span> <span word="lost">lost</span> <span word="in">in</span> <span word="history">history</span> <span word="were">were</span> <span word="still">still</span> <span word="drifting">drifting</span> <span word="on">on</span> <span word="top">top</span> <span word="of">of</span> <span word="the">the</span> <span word="water">water</span>," <span word="says">says</span> <span word="Jan">Jan</span> <span word="W">W</span>ö<span word="rner">rner</span>, <span word="European">European</span> <span word="Space">Space</span> <span word="Agency">Agency</span> (<span word="ESA">ESA</span>) <span word="director">director</span> <span word="general">general</span>.</p><p>欧洲航天局（<span word="ESA">ESA</span>）局长<span word="Jan">Jan</span> <span word="W">W</span>ö<span word="rner">rner</span>说：“想象一下如果曾经失踪的所有船只都漂浮在水面上，在公海航行会有多危险。”</p><p>"<span word="That">That</span> <span word="is">is</span> <span word="the">the</span> <span word="current">current</span> <span word="situation">situation</span> <span word="in">in</span> <span word="orbit">orbit</span>, <span word="and">and</span> <span word="it">it</span> <span word="cannot">cannot</span> <span word="be">be</span> <span word="allowed">allowed</span> <span word="to">to</span> <span word="continue">continue</span>."</p><p>“目前轨道上就是这种情况，不能再任其继续发展了。”</p><p><span word="It">It</span>'<span word="s">s</span> <span word="almost">almost</span> <span word="as">as</span> <span word="if">if</span> <span word="we">we</span> <span word="need">need</span> <span word="a">a</span> <span word="tow">tow</span> <span word="truck">truck</span> <span word="to">to</span> <span word="remove">remove</span> <span word="all">all</span> <span word="the">the</span> <span word="thousands">thousands</span> <span word="of">of</span> <span word="failed">failed</span> <span word="satellites">satellites</span> <span word="from">from</span> <span word="our">our</span> <span word="orbit">orbit</span>; <span word="incidentally">incidentally</span>, <span word="that">that</span>'<span word="s">s</span> <span word="exactly">exactly</span> <span word="what">what</span> <span word="the">the</span> <span word="ESA">ESA</span> <span word="is">is</span> <span word="working">working</span> <span word="on">on</span>.</p><p>就好像我们需要一辆拖车把成千上万颗失灵的卫星拖离轨道。顺便说一句，这正是欧洲航天局正在研究的。</p><p><span word="By">By</span> 2025, <span word="the">the</span> <span word="agency">agency</span> <span word="plans">plans</span> <span word="on">on</span> <span word="launching">launching</span> <span word="the">the</span> <span word="world">world</span>'<span word="s">s</span> <span word="first">first</span> <span word="orbiting">orbiting</span> <span word="junk">junk</span> <span word="collector">collector</span>, <span word="a">a</span> <span word="four">four</span>-<span word="armed">armed</span> <span word="robot">robot</span> <span word="that">that</span> <span word="tracks">tracks</span> <span word="down">down</span> <span word="space">space</span> <span word="waste">waste</span> <span word="like">like</span> <span word="Pac">Pac</span>-<span word="Man">Man</span> <span word="in">in</span> <span word="a">a</span> <span word="maze">maze</span>.</p>
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