string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%9B%BD%E9%99%85%E6%B2%B9%E4%BB%B7%E4%B8%BA%E4%BD%95%E5%A4%A7%E6%B6%A8%E5%91%A2 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
国际油价为何大涨呢
