First, this paper introduces the basic e-commerce and third-party logistics, as well as two of the close relationship between.

首先，本文介绍基本的电子商务和第三方物流的情况，以及两者的之间的密切关系。

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This paper gives the formal description of the two-party protocol, and discusses the security, authenticability and verifiability for two-praty protocols.

论文首先给出协议的形式化描述，然后讨论了协议的安全性、可鉴别性和可验证性。

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Two research issues are addressed in this paper: Analysis of the cooperation relationship in the third party logistics'operation and analysis of the business cost.

本文的主要内容分为两个部分：第三方物流运作中的合作问题研究以及商务成本研究。

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