document.write("<div class=\"prevBox\"><div class=\"prevBtn\"></div><p><a href=\"/story?sid=73046\">外骨骼“靴子”帮助更快走路</a></p></div>");document.write("<div class=\"nextBox\"><div class=\"nextBtn\"></div><p><a href=\"/story?sid=73048\">人类迷你大脑植入小鼠</a></p></div>");