It is hereby proposed that dynamic cultural equivalence be applied as the overriding principle to guide and thus improve the C-E business translation.

The most well-received equivalence theory is the one initiated by Nida, entailing dynamic equivalence and formal equivalence.

American translation theorist Eugene Nida (1964) maintains that the role of the translator in translation is an intermediary one that tries to convey to the readers the original information of the source text so as to achieve maximum"dynamic equivalence"between the source text and the target text.

A good translator should succeed in keeping the problem of "tone" in his mind and try his best to achieve a dynamic equivalence of tone between the original text and the translated text.

The translation of advertising languages should be done under the guideline of the theory of functional equivalence by exploiting the method of literal translation,semantic equivalence and cultural equivalence,thus reflecting the features and functions of the original ads and promoting consuming.

In this paper,the author proposes that the cultural equivalence principle must be taken into account while translating advertisements so as to make the addressee accept the messages conveyed by the translator and lessen the conflict between the original culture and the target one.

Group Key Agreement Protocols in Dynamic Peer Group;

With the rapid development of network technology and increased Internet-scale, the application areas of dynamic peer group communication (Dynamic Peer Group Communication) is more and more widely, such as video conferencing, network games, real-time information services, distributed simulation, etc.