string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%AE%B6%E7%94%A8%E5%90%B8%E5%B0%98%E5%99%A8%E9%80%89%E6%9C%89%E7%BA%BF%E8%BF%98%E6%98%AF%E6%97%A0%E7%BA%BF => Failed to connect to 101.89.117.144 port 38076: Connection refused"
家用吸尘器选有线还是无线
