书籍 Solutions - 中高级 - 1单元 - 1F

someone who pays or agrees to pay for access to a service or product on a regular basis

the act of communicating or working together with someone or something

information, criticism, or advice about a person's performance, a new product, etc. intended for improvement

all the things that are held, included, or contained in something else

the quality or state of being easily reached, entered, used, or understood by everyone, regardless of any physical or mental limitations

可及性

a person, company, or organization that offers goods or services to customers

a TV station that broadcasts different programs

a type of computer or software system that is designed to work together with a specific operating system