尝试多种办法都只能安装Gazebo Sim, 而不是classic, 求解决办法

$ sudo apt install ros-humble-gazebo-*
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note: selecting 'ros-humble-gazebo-model-attachment-plugin-msgs-dbgsym' for glob 'ros-humble-gazebo-*'
Note: selecting 'ros-humble-gazebo-video-monitor-interfaces' for glob 'ros-humble-gazebo-*'
Note: selecting 'ros-humble-gazebo-model-attachment-plugin-msgs' for glob 'ros-humble-gazebo-*'
Note: selecting 'ros-humble-gazebo-msgs-dbgsym' for glob 'ros-humble-gazebo-*'
Note: selecting 'ros-humble-gazebo-dev' for glob 'ros-humble-gazebo-*'
Note: selecting 'ros-humble-gazebo-video-monitor-utils' for glob 'ros-humble-gazebo-*'
Note: selecting 'ros-humble-gazebo-video-monitor-interfaces-dbgsym' for glob 'ros-humble-gazebo-*'
Note: selecting 'ros-humble-gazebo-msgs' for glob 'ros-humble-gazebo-*'
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies.
 ros-humble-gazebo-dev : Depends: gazebo but it is not installable
                         Depends: libgazebo-dev but it is not installable
E: Unable to correct problems, you have held broken packages.

$ sudo apt install gazebo
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package gazebo is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'gazebo' has no installation candidate


$ sudo apt install gazebo11
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package gazebo11 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'gazebo11' has no installation candidate