string(339) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%99%BA%E8%83%BD%E5%AE%B6%E5%B1%85%E5%88%A9%E7%94%A85g%E6%8A%80%E6%9C%AF%E5%AE%9E%E7%8E%B0%E7%9A%84%E6%96%B0%E5%8A%9F%E8%83%BD%E6%9C%89%E5%93%AA%E4%BA%9B%E6%96%B9%E9%9D%A2 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
智能家居利用5g技术实现的新功能有哪些方面
