National arbiter的意思|示意

The law does not say who defines national values, but there are no prizes for guessing the final arbiter.

该法并没明确由谁来确定国家的价值取向，但猜想最后的裁决者没有什么意义。

The National Bureau of Economic Research, arbiter of American business cycles, determined that America’s economy has been in recession since December 2007.

国家经济研究局（The National Bureau of Economic Research 以下称NBER），美国的权威经济周期公断机构，断定自从上一年12月开始美国已经进入了经济衰退。