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 Nback).
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.
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.