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%E7%94%B5%E8%84%91%E7%9A%84%E9%80%89%E8%B4%AD%E6%96%B9%E6%B3%95 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
笔记本电脑的选购方法
