string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%BA%E4%BB%80%E4%B9%88%E8%BF%91%E6%9C%9F%E6%B2%B9%E4%BB%B7%E4%B8%8A%E6%B6%A8%E5%B9%85%E5%BA%A6%E8%BE%83%E5%A4%A7 => Failed to connect to 101.89.117.144 port 38005: Connection refused"
为什么近期油价上涨幅度较大
