string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA%E5%8F%AF%E4%BB%A5%E7%94%A8%E4%B8%80%E5%BB%BA%E7%9A%84%E4%B9%A6%E5%90%97 => Failed to connect to 101.89.166.210 port 38089: Connection refused"
二建可以用一建的书吗
