string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%BE%99%E7%82%8E%E9%A3%9E%E4%BA%8C%E5%BB%BA%E5%AE%9E%E7%89%A9%E8%83%8C%E8%AF%B5%E7%82%B9 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
龙炎飞二建实物背诵点
