string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%8D%8E%E4%B8%BA%E6%94%AF%E6%8C%81%E7%BA%A2%E5%A4%96%E7%BA%BF%E7%9A%84%E6%9C%BA%E5%9E%8B => Failed to connect to 14.18.117.71 port 38069: Connection refused"
华为支持红外线的机型
