在街角处就有一个公用电话。事实上，在几乎所有的大型商场、饭店、餐馆和加油站都有公用电话。

There is a pay phone just around the corner. Actually you can find public phones in almost all the big stores, hotels, restaurants and gasoline stations.

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公用电话经常安装在以下场所：公共汽车站、火车站、飞机场、商店、旅馆、饭店、加油站、许多街角以及大多数的写字楼。

Public phones are located in bus and railroad stations, airports, stores, hotels, restaurants, gasoline stations, on numerous street corners and in most office buildings.

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本课题针对热力站管理运行特点，研制成功基于PSTN公用电话网的分布式计算机远程监测系统。

Now we have researched and developed a distributed computer monitoring system based on PSTN for heating power stations in this graduate program.

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