document.write("<div class=\"prevBox\"><div class=\"prevBtn\"></div><p><a href=\"/story?sid=71142\">控制车辆能让街道更安全对气候更友好？</a></p></div>");document.write("<div class=\"nextBox\"><div class=\"nextBtn\"></div><p><a href=\"/story?sid=71144\">NIH 试验 COVID 疫苗加强针以对抗未来变种</a></p></div>");