string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%AC%94%E8%AE%B0%E6%9C%AC%E9%80%89%E8%B4%AD%E4%BB%B7%E6%A0%BC%E6%80%8E%E4%B9%88%E7%AE%97 => Failed to connect to 14.18.117.71 port 38133: Connection refused"
笔记本选购价格怎么算
