string(251) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=cf%E5%9C%A8%E8%B6%B3%E7%90%83%E9%87%8C%E6%98%AF%E4%BB%80%E4%B9%88%E6%84%8F%E6%80%9D => Failed to connect to 101.89.117.144 port 38022: Connection refused"
cf在足球里是什么意思
