string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%A9%BA%E8%B0%83%E7%9A%84%E6%B8%A9%E5%BA%A6%E6%98%AF%E5%A4%9A%E5%B0%91%E6%9C%80%E5%90%88%E9%80%82%E7%9A%84 => Failed to connect to 101.89.166.210 port 38089: Connection refused"
空调的温度是多少最合适的
