string(242) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=20%E4%B8%AA%E5%B8%B8%E7%94%A8%E5%9B%BD%E5%AE%B6%E7%9A%84%E8%8B%B1%E6%96%87 => Failed to connect to 101.89.117.144 port 38005: Connection refused"
20个常用国家的英文
