In addition to Tsinghua University to visit, of course we will go to some other Beijing attractions to go play, such as the Great Wall (although I have been to N back).

除了清华大学的参观，我们当然还会去一些其他的北京景点去游玩，比如长城（虽然本人已去过N回）。

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In order to provide reliable data transmission service on disturbed channels, a modified Go-Back-N ARQ protocol is used to retransmit data by a communication gateway.

文中介绍为了在有扰信道中提供可靠数据传输服务，通信网关在应用层使用经过改良的连续ARQ协议机制实现数据重传。

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To see how far back more advanced capabilities such as addition might go, researchers at Duke University in Durham, N. C. , focused on somewhat distant relatives of humans—rhesus monkeys.

在北卡州德奈姆市杜克大学的研究人员为了了解像加法这样的能力进化了多少，他们关注了和人类有点远亲关系的--猕猴。

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But there was no deal when Blair went to see President Vladimir Putin to ask him to drop his insistence that U.N. inspectors should go back to Iraq before sanctions were ended.

CNN: Analysis: Battles ahead over U.N. role

Climate negotiators are heading back to the table today in Durban, South Africa, for the latest go-round of the U.N. climate change talks, the 17th Conference of the Parties (COP 17).

FORBES: Climate Treaty Would Actually Be Good for Business