Paradoxically, perhaps the biggest hurdle the initiative faces is not civil liberties worries but the age-old barrier between federal law enforcement and its state and local counterparts.

荒谬的是，这项倡议面临的最大障碍可能不是对公民自由的担心，而是由来已久的存在于联邦法律执行部门与州和地方执法部门之间的矛盾。

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The additional upper state is created by a first quantum well adjacent to the injection barrier.

新增高能态是通过注入式势垒旁第一个量子阱来创建的。

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The Representational State Transfer (REST) architectural style offers a low-barrier entry point for consuming Web services.

代表性状态 (REST) 体系结构样式提供了壁垒较低的使用 Web 服务门槛。

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He wanted to demonstrate that he recognized a barrier between church and state and that his loyalty was to our nation's laws above all else.

CNN: Presidents should not swear in on a Bible

In New Jersey, Gov. Chris Christie issued a stark warning Friday to people on the state's barrier islands.

WSJ: Irene Closes In on North Carolina Coast

State security forces formed a barrier between the opposing protesters.

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