string(294) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BB%8A%E5%B9%B4%E6%B2%B9%E4%BB%B7%E4%B8%BA%E4%BB%80%E4%B9%88%E8%BF%99%E4%B9%88%E4%BE%BF%E5%AE%9C%E5%91%A2%E7%9F%A5%E4%B9%8E => Failed to connect to 101.89.117.144 port 38208: Connection refused"
今年油价为什么这么便宜呢知乎
