string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BB%80%E4%B9%88%E6%B5%8F%E8%A7%88%E5%99%A8%E7%A8%B3%E5%AE%9A%E6%80%A7%E6%9C%80%E5%A5%BD => Failed to connect to 125.88.227.171 port 38114: Connection refused"
什么浏览器稳定性最好
