传输信息的媒介质限制了网络传输的速度和制约着两台计算机之间的距离，并影响着网络的拓扑结构。
The medium used to transmit information limits the speed of the network, the effective distance between computers, and the network topology.
物理连接被传输信号的媒介质定义并表示出相应的拓扑结构。
Physical connections are defined by the medium used to carry the signal, the geometric arrangement of the computers, and the method used to share information.
在美国殖民地，如报纸、小册子之类的广告和传媒介质成为了销售商品和服务的主要因素。
In the American colonies, advertising and communication media like newspapers and pamphlets became a major factor in marketing goods and services.
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