string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E4%B8%A4%E7%99%BE%E7%9A%84%E5%90%B8%E5%B0%98%E5%99%A8%E8%83%BD%E7%94%A8%E5%90%97 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
一两百的吸尘器能用吗
