The paper think that the benefits balanced mechanism has become one of the key factor that the copyright benefits between in each subject arrived at fair and effective in a balanced state.

本文认为利益均衡机制是关系到著作权各方主体之间利益达到公平、有效均衡状态的关键性因素之一。

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And key update is one of the important problems in this subject.

而组播密钥更新是其中的一个热点问题。

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Public key cryptosystem is one of the most important research subject in modern cryptography.

公钥密码系统是现代密码学最重要的研究课题之一。

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On the subject of North Korea, ElBaradei said there are two key issues: "One is its obsession with security and the possibility of regime change by the U.S.

VOA: standard.2009.11.04

Encouraging people to become active citizens in the so-called Big Society was one of the Conservatives' key themes, he said, and citizenship teaching was the ideal subject to aid this.

BBC: Teachers fear for future of citizenship lessons

To summarize: you prep for thoughtful discussion of a subject, even working through key points with a producer, only to be ambushed in one way or another on air.

FORBES: Why I rarely do TV