The secrecy policy causes search engine technology to remain largely a black art and to be advertising oriented.

保密政策使得搜索引擎技术在一定程度上保留着它神秘的面纱，并且面向广告。

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It led the world in computer and material science technology, and it jealously hoarded its leadership with military secrecy and export controls.

它在计算机和材料科学技术领域走在全球的前列，通过军事机密和出口控制小心地保持着自己的领导地位。

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Business secrets refer to the practical information of technology and operation unknown to the public on which the obligee takes secrecy measures and which can bring economic benefits to the obligee.

商业秘密是指不为公众所知悉、能为权利人带来经济利益、具有实用性并经权利人采取保密措施的技术信息和经营信息。

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The decision was made to maintain secrecy so other codes could continue to be broken using the technology and techniques.

BBC: Why is Google in love with Bletchley Park?

Last August, Griffith, a graduate student at the California Institute of Technology, released a simple piece of software code that tore the lid of secrecy off the anonymous community of volunteers who edit the nonprofit encyclopedia.

FORBES: The Wiki-Hacker Strikes Again

"We believe that technology has the power to expose and dismantle global criminal networks, which depend on secrecy and discretion in order to function, " Google said in a blog post this week.

CNN: Google takes on the drug cartels