As a backbone system that interconnects networks, internet was a name that fit.
作为连接网络的主干系统，互联网这一名称很合适。
Primary care should be the backbone of any health care system.
基层医疗应该是任何卫生医疗系统的支柱。
As the backbone of our transport system, railway is a national economic artery.
铁路作为我国交通运输体系的骨干，是国民经济的大动脉。
The outside building cable is also referred to as the communication system backbone.
建筑物外部布线也归为通信系统中枢。
The outside building cable is also referred to as the communication system backbone.
建筑物外部布线也归为通信系统中枢。
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