string(230) "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%E4%B8%AD%E5%89%AA%E6%8E%89%E4%B8%80%E6%AE%B5 => Failed to connect to 101.89.120.29 port 38104: Connection refused"
视频中剪掉一段
