Meaning of ALTERNATE in English

ALTERNATE

[verb] [usually + adverb or preposition] - (to cause two things) to happen or exist one after the other repeatedlyHer cheerfulness alternated with despair. [I]The children alternated between being excited and tired. [I]He alternated working in the office with long tours overseas. [T]

Cambridge English vocab.      Кембриджский английский словарь.