string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%93%AA%E4%B8%AA%E6%B5%8F%E8%A7%88%E5%99%A8%E6%AF%94%E8%BE%83%E7%A8%B3%E5%AE%9A => Failed to connect to 101.89.117.144 port 38208: Connection refused"
哪个浏览器比较稳定
