string(292) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E4%B8%8A%E4%BB%B7%E6%A0%BC%E6%AF%94%E5%AE%9E%E4%BD%93%E4%BB%B7%E6%A0%BC%E4%BE%BF%E5%AE%9C%E5%A4%9A%E5%B0%91%E9%92%B1 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
网上价格比实体价格便宜多少钱
