Perpetrators and victims are known to exchange roles over and over again in countless subtle and obvious ways.

以无数微妙或明显的方式，犯罪者和受害者会一再转换角色，这尽人皆知。

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These roles are analogous to and must interoperate with the server and client device roles the generic object exchange profile defines.

这些角色相似于而且必须与通用对象交换配置文件定义的服务与客户端角色互操作。

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Yan fu turned to be proved as one of decisive roles in the historical process of China's Enlightenment and east-west cultural exchange.

严复在近代中国思想启蒙运动和中西文化交流史上是一个举足轻重的历史人物。

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On Wednesday, U.S. regulators voted in favor of a plan to beef of governance at the exchange, which included splitting the chairman and CEO roles.

FORBES: Magazine Article

The Securities and Exchange Commission and the Commodity Futures Trading Commission will hold a two-day conference to sort out their respective roles in the Obama administration's plan to revise how to police America's markets.

FORBES: Magazine Article