string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%8E%B0%E5%9C%A8%E8%BF%98%E6%9C%89%E4%B8%8E%E4%B8%96%E9%9A%94%E7%BB%9D%E7%9A%84%E5%9C%B0%E6%96%B9%E5%91%A2 => Failed to connect to 125.88.227.171 port 38062: Connection refused"
现在还有与世隔绝的地方呢
