document.write("<div class=\"prevBox\"><div class=\"prevBtn\"></div><p><a href=\"/story?sid=84326\">北极野火释放封存的古老碳汇</a></p></div>");document.write("<div class=\"nextBox\"><div class=\"nextBtn\"></div><p><a href=\"/story?sid=84328\">NASA 维护旅行者号代码的工程师日益稀少</a></p></div>");