This either means that the username and password information in your wp-config.php file is incorrect or we can't contact the database server at localhost .这也意味着，用户名和密码的信息在您的wp-config.php文件是不正确的，否则我们无法联系数据库服务器在localhost 。 This could mean your host's database server is down.这可能意味着您的主机的数据库服务器已关闭。
If you're unsure what these terms mean you should probably contact your host.如果您不确定这些名词的含义也许您应该联系您的主机。 If you still need help you can always visit the如果您仍需要帮助您可以随时访问 WordPress Support Forums WordPress的支持论坛 . 。