Chinese means: play a role in ...
Examples are as follows:
Because these things are unpaired, we have seen how unpaired electrons come from. Play a role in ... Stern-Gerlach experiment.
Because these things are unpaired, we found out what unpaired electrons do in Stern-Gerlach experiment.
I played a role in the meeting.
I played a role in this meeting.
Media? Play a? Major? Where is the role? Affect people's opinions. ?
The media plays an important role in influencing public opinion.
They? Play a role in ... Decide the champion.
They play an important role in deciding the winner.