I know the general meaning of this sentence, but I don't know how to translate it accurately.

Recruitment, as a title, has two meanings: comprehensive and recruitment.

A young secretary is suitable for a busy office. A busy office (explaining the working environment) needs a young secretary (explaining the recruitment target) to make sentences appear in job advertisements, and sentences do not need to be complete. The complete statement is that a busy office needs a young secretary. At first, advertisements in newspapers were charged according to words such as telegrams or the space occupied by newspapers, so many words that could be omitted were not typed. Although there are many online advertisements now, there are few restrictions in this respect, but people are used to this grammar.