used to say that sth will definitely happen, although you are not sure when :
It's only a matter of time before they bring out their own version of the software.
used to say that sth will definitely happen, although you are not sure when :
It's only a matter of time before they bring out their own version of the software.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005