/ ˌdʒiː es ˈem; NAmE / abbreviation
Global System/Standard for Mobile Communication(s) (an international system for digital communication by mobile phone / cellphone)
/ ˌdʒiː es ˈem; NAmE / abbreviation
Global System/Standard for Mobile Communication(s) (an international system for digital communication by mobile phone / cellphone)
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005