string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%89%8B%E6%9C%BA%E7%AA%81%E7%84%B6%E5%8F%982g%E7%BD%91%E6%80%8E%E4%B9%88%E8%A7%A3%E5%86%B3 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
手机突然变2g网怎么解决
