used to say that sth is always true, whatever the situation is, or that sb should certainly do sth :
They don't last long no matter how careful you are.
Call me when you get there, no matter what the time is.
used to say that sth is always true, whatever the situation is, or that sb should certainly do sth :
They don't last long no matter how careful you are.
Call me when you get there, no matter what the time is.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005