quaternary signalling

例句：

1. 1. The quaternary signalling system is a complex network that controls traffic flow.
   四分体信号系统是一个复杂的网络，用于控制交通流量。
2. 2. The quaternary signalling system is used to regulate the flow of goods and services in the economy.
   四分体信号系统被用来调节经济中货物和服务的流动。
3. 3. The quaternary signalling system is an essential part of modern transportation infrastructure.
   四分体信号系统是现代交通基础设施的重要组成部分。