"maintain its role" is a grammatically correct phrase and can be used in written English.
It means to continue fulfilling or performing a certain function or purpose. Example: The government must maintain its role as a mediator in the ongoing negotiations between the two countries.
Daimler has said it would maintain its role as Germany's representative in EADS, one of Europe's largest military contractors and the maker of Airbus aircraft.
It is desperate to maintain its role at the centre of China's capital markets at a time when its two mainland rivals, Shanghai and Shenzhen, are taking their own tentative steps towards opening up.
And he'd probably also encourage Apple to seriously consider acquiring Tesla so that it can continue to maintain its role as the biggest bang disruptor of them all.
However, philanthropy needs to maintain its role in development as it's a response to social problems that cannot be always addressed within markets.
Since the Global Fund clearly states in its mission that it is a financing mechanism rather than an implementing institution, it is essential that the Global Fund maintain its role in promoting financial accountability and not develop its in-house HTA capacity.
"Now, with most of their well-known figures out of the picture, it will be hard for Al Qaeda's core to maintain its role as the example for its affiliates to follow," said one American official who follows classified counterterrorism reports.
Egypt's Muslim Brotherhood reacted to the Cairo protests with statements that illustrated its need to rein in the popular anger while maintaining its role as the mainstream voice of Islam: it implicitly criticized the violence of the embassy attack while calling for peaceful nationwide protests against the video on Friday.
Still, he maintains, its role in history is secure.
PARIS — Saudi Arabia has maintained its role this year as the world's oil producer of last resort, the International Energy Agency said Tuesday.
While the United States maintained its role as the world's leading supplier of weapons, officials nonetheless saw the value of its arms trade sharply decline in 2009.
There are awkward questions about accountability, capacity and whether such closeness to government is compatible with maintaining its role as an advocate for causes.
