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%E8%A1%8C%E4%B8%9A%E7%9A%84%E5%B7%A5%E8%B5%84%E8%BE%83%E9%AB%98 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
什么行业的工资较高
