string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%88%86%E8%BE%A8%E7%8E%87%E9%83%BD%E6%9C%89%E5%93%AA%E5%87%A0%E7%A7%8D => Failed to connect to 101.89.117.144 port 38076: Connection refused"
分辨率都有哪几种
