The major components of our energy systems, such as fuel production, refining, electrical generation and distribution, are costly installation that have lengthy life span.
我们能源系统的主要组成部分，如燃料生产、提炼、发电和分配，用的是昂贵的、使用寿命较长的装置。
2
Moreover, the integration of the European community will oblige television companies to cooperate more closely in terms of both production and distribution.
此外，欧洲共同体的一体化将迫使电视公司在制作和发行方面进行更密切的合作。
3
Economics, as we know it, is the social science concerned with the production, distribution, exchange, and consumption of goods and services.