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%E5%85%8D%E8%B4%B9%E7%9A%84%E6%89%8B%E6%9C%BA%E5%81%9A%E9%A2%98%E8%BD%AF%E4%BB%B6 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
一建免费的手机做题软件
