string(243) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%8D%8E%E4%B8%BAnov7%E8%80%B3%E6%9C%BA%E6%80%8E%E4%B9%88%E4%BD%BF%E7%94%A8 => Failed to connect to 101.91.112.32 port 38221: Connection refused"
华为nov7耳机怎么使用
