string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%B7%A8%E9%87%8F%E5%8D%83%E5%B7%9D%E6%98%AF%E5%81%9A%E4%BB%80%E4%B9%88%E7%9A%84 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
巨量千川是做什么的
