求翻译：公品的种类很多,诸如国防、外交、环境保护、基础研究、义务教育等纯公品以及城市自来水、管道煤气、电力、电信、邮政、铁路、收费公路等公共设施。是什么意思？

Many types of public goods , such as defense, foreign affairs , environmental protection , basic research, compulsory education and other pure public goods and urban water supply, gas pipelines , electricity, telecommunications , postal services, railways, toll roads and other public facilities .

The range of products, such as defense, foreign affairs, environmental protection, basic research, such as compulsory Pure public goods, as well as urban water supply, pipeline gas, electricity, telecommunications, postal services, railways, toll roads, public facilities.

The public product type are very many, such as national defense, diplomacy, environmental protection, basic research, compulsory education and so on pure public product as well as city running water, pipeline coal gas, electric power, telecommunication, postal service, railroad, charge road and so o

Many types of public goods, such as defence and Foreign Affairs, environmental protection, basic research, pure public goods such as education and urban water, gas, electricity, telecommunications, postal services, railways, toll roads and other public facilities.

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