string(234) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E5%B9%B4%E4%BA%8C%E5%BB%BA%E7%9A%84%E9%80%9A%E8%BF%87%E7%8E%87 => Failed to connect to 101.91.112.32 port 38221: Connection refused"
2021年二建的通过率
