string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AD%E5%9B%BD%E7%9A%84%E4%B8%A4%E6%9D%A1%E6%B5%B7%E5%B3%A1 => Failed to connect to 101.89.166.210 port 38089: Connection refused"
中国的两条海峡
