string(266) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%B8%B8%E8%A7%81%E5%9B%BD%E5%AE%B6%E7%9A%84%E8%8B%B1%E6%96%87%E5%90%8D%E5%92%8C%E5%9B%BD%E6%97%97 => Failed to connect to 101.91.112.32 port 38195: Connection refused"
常见国家的英文名和国旗
