string(249) "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%E5%B7%A5%E4%BD%9C%E4%B8%8D%E5%8F%97%E4%BA%BA%E7%AE%A1%E5%88%B6 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
什么工作不受人管制
