string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E8%93%9D%E5%AE%9D%E4%B9%A6%E8%83%8C%E4%B8%8B%E6%9D%A5%E8%83%BD%E8%BF%87%E5%90%97 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
一建蓝宝书背下来能过吗
