string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%B7%B4%E9%BB%8E%E5%92%8C%E4%BC%9A%E7%9A%84%E9%87%8D%E7%82%B9%E9%97%AE%E9%A2%98 => Failed to connect to 101.89.117.144 port 38022: Connection refused"
巴黎和会的重点问题
