I follow the official ROS Kinetic Install Tutorial on my ubuntu16.04,but i met the problem while

elon@elonWorkStation:~/Script$ sudo apt-get install ros-kinetic-desktop-full
Reading package lists... Done
Building dependency tree       
Reading state information... Done
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-kinetic-desktop-full : Depends: ros-kinetic-desktop but it is not going to be installed
                            Depends: ros-kinetic-perception but it is not going to be installed
                            Depends: ros-kinetic-simulators but it is not going to be installed
                            Depends: ros-kinetic-urdf-tutorial but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

I have try every method I can find but no luck. This is my /etc/apt/sources.list

deb http://mirrors.aliyun.com/ubuntu/ xenial universe restricted multiverse

I have worked on the problem for about a day. I can I fix it.