string(280) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%AE%BD%E5%B8%A6%E8%BF%9E%E6%8E%A5%E9%80%9F%E5%BA%A6mbps%E5%A4%9A%E5%A4%A7%E6%98%AF%E6%AD%A3%E5%B8%B8%E7%9A%84 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
宽带连接速度mbps多大是正常的
