string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%A7%86%E9%A2%91%E5%89%AA%E8%BE%91%E8%A6%81%E7%94%A8%E5%88%B0%E7%9A%84%E8%BD%AF%E4%BB%B6 => Failed to connect to 14.116.215.7 port 38230: Connection refused"
视频剪辑要用到的软件
