string(328) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%88%86%E6%9E%90%E7%83%AD%E9%97%A8%E7%9F%AD%E8%A7%86%E9%A2%91%E7%9A%84%E5%86%85%E5%AE%B9%E3%80%81%E7%89%B9%E7%82%B9%E5%92%8C%E4%BC%A0%E6%92%AD%E4%BA%BA%E7%BE%A4 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
分析热门短视频的内容、特点和传播人群
