As to international reserve currencies such as the U. S. dollar, if its international role conflicts with its domestic one, how should we explain and analyze such an issue?

像美元这样的国际货币，如果它的国际角色和国内角色发生冲突，应该如何解释和分析。

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Teachers' role depends on a role expectation, normal obedience, a grip of role character, adjustment of role difference and dissolution of role conflicts.

教师角色扮演好坏取决于角色期待、角色规范遵从、角色特征把握、角色差距调适和角色冲突化解等方面。

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Given the relatively low costs of drones -- already far cheaper than the costs of a fighter jet and of training a fighter jet pilot -- armed drones will play a key role in future conflicts.

CNN: A dangerous new world of drones

The discussion will set out an agenda for strengthening the role of education systems in preventing conflicts and building peaceful societies.

UNESCO: MEDIA SERVICES

The scheme is the first in the UK to recognise the role played by merchant sailors in conflicts, the council said.

BBC: Hull signs military charter to help forces veterans