( slipped discs)
If you have a slipped disc , you have a bad back because one of the discs in your spine has moved out of its proper position.
N-COUNT
( slipped discs)
If you have a slipped disc , you have a bad back because one of the discs in your spine has moved out of its proper position.
N-COUNT
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006