公共基础设施是指为公众设置的，公众都可以共享，不允许某个人独占或排他的一些基础性设施。如：医疗机构、教育机构、道路桥梁等。
公共基础设施建设 building of public infrastructure
公共文化基础设施 public cultural infrastructure
公共密钥基础设施 PKI ; Public Key Infrastructure
公共基础设施服务 Public infrastructure service
公共事件基础设施 Common Event Infrastructure ; CEI
资源公共密钥基础设施 RPKI
公共语言基础设施 Common Language Infrastructure ; CLI
如果公共事件基础设施 common event infrastructure ; CEI
是公共密钥基础设施 Public Key Infrastructue
然而，公共基础设施并没有跟上城市扩张的步伐，这造成了大规模的交通拥堵，也大大拉长了通勤时间。
However, public infrastructure did not keep pace with urban sprawl, causing massive congestion problems which now make commuting times far higher.
我们没有听说哪个公共基础设施出过故障。
We have never heard of a case where a public infrastructure had an outage.
一个私营机场比可避免地要寻求公共基础设施投入。
A private airport would inevitably require public infrastructure spending.
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