When network traffic is light, computers can simply wait for silence on the carrier, and then transmit their data.
当网络流量较小时，计算机可以简单地等待载体上的静默，然后传输它们的数据。
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But, as network traffic increases, the probability that two computers will attempt to write data at the same time also increases.
但是，随着网络流量的增加，两台计算机同时尝试写入数据的可能性也会增加。
中文百科
网络流量
网络流量是指能够连接网络的设备在网络上所产生的数据流量。
英语百科
Network traffic 网络流量
Network traffic or data traffic is the amount of data moving across a network at a given point of time. Network data in computer networks is mostly encapsulated in network packets, which provide the load in the network. Network traffic is the main component for network traffic measurement, network traffic control and simulation.