The principal role of the FBI is domestic counterintelligence.
"The principal role of national parks is one of conservation but also as a public asset.
Who, these impatient observers wondered, would be cast in the final principal role of this production?
When Bergman cast Ullmann in the principal role of his complex psychological drama Persona (1966), they began a long-standing professional and personal relationship.
The same loss of relevancy, by the way, can be pinned as well on the Letterman-Leno format, whose old principal role, of interviewing stars plugging their latest projects, has also been rendered obsolete by cable's ubiquitous entertainment-interview shows.
Perhaps that's ceased to be a job for pop music, which long ago surrendered any claim to influence how we think about the world, and focused on its principal role of being a diversion from it.
This masks the fact that in law the ultimate body in charge is not the director but the corporate council, and a principal role of a senior officer is to give sound advice to the council.
The principal role of elected governments in the UK, regardless of party affiliation, is to create and maintain the optimum conditions for economic growth in the interests of an all-powerful corporate elite.
He has some technical problems to sort though and generally, although not on the first day here, Carberry has fulfilled the principal role of seeing off the new ball.
The poor and the outcast had no voice in the way the society that sheltered them was run, and the principal role of the keepers of law and order was to ensure that they did not, in the absence of participation, take to the streets.
The principal role of the SSC muscle in shoulder motion is internal rotation.
