string(230) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=pa%E7%A0%94%E7%A9%B6%E7%94%9F%E8%80%83%E8%AF%95%E5%88%86%E6%95%B0 => Failed to connect to 14.18.46.51 port 38206: Connection refused"
pa研究生考试分数
