function or importance of sb/sth; the duty or purpose of a person or group in a particular activity or area of life
the part or character taken by an actor in a play, film, etc.
"the function of a teacher"
"the government must do its part"
"play its role"
"she played the part of Desdemona"
"the function of an auger is to bore holes"
"ballet is beautiful but what use is it?"
"what is your role on the team?"
The role of reasoning in moral argument.
出自： B. Mayo
Divorce of role from self destroys the integrity of the personality.
出自： J. Klein
She slipped easily into the role of housekeeper.
出自： W. M. Clarke
He will appear in the role of mediator.