string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BF%84%E7%BD%97%E6%96%AF%E9%9D%A2%E7%A7%AF%E5%92%8C%E9%9D%9E%E6%B4%B2%E5%93%AA%E4%B8%AA%E5%A4%A7 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
俄罗斯面积和非洲哪个大
