utility

名词 utility:

a company that performs a public service; subject to government regulation

同义词：public utility, public utility company, public-service corporation

the quality of being of practical use

同义词：usefulness

the service (electric power or water or transportation) provided by a public utility

(economics) a measure that is to be maximized in any situation involving choice

(computer science) a program designed for general support of the processes of a computer

同义词：utility program, service program

a facility composed of one or more pieces of equipment connected to or part of a structure and designed to provide a service such as heat or electricity or water or sewage disposal

形容词 utility:

used of beef; usable but inferior

同义词：utility-grade

capable of substituting in any of several positions on a team

同义词：substitute