This ability of the human brain to turn fear on its head could be a key to treating phobias(3) and anxiety disorders, according to scientists.

科学家称人脑对恐怖事物的反应将是治疗恐怖症和焦虑症的关键。

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In theory, this could one day provide a key component of any nanoscale electrical circuit-a way to mechanically turn the current on and off or change its direction.

理论上讲，这种机械切换电流通断或方向的方法，或许有一天会成为任何纳米尺度电路的关键元件。

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This process is, in turn, based on the public key of the signer.

相反，这个过程是基于签名者的公有密钥的。

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To the extent there is such trade, the emphasis should be on the sale of end-products, as opposed to turn-key manufacturing and processing capabilities.

CENTERFORSECURITYPOLICY: US-Soviet Relations

And yet, when you cut through that rhetoric, you'd have to conclude that they do agree on key fundamentals about the economy - and even on the government's limited capacity to turn things around.

BBC: Osborne, Balls and the OECD: Where they agree