transcription, транскрипция: [ sæk ]
( sacs)
A sac is a small part of an animal’s body, shaped like a little bag. It contains air, liquid, or some other substance.
The lungs consist of millions of tiny air sacs.
N-COUNT
transcription, транскрипция: [ sæk ]
( sacs)
A sac is a small part of an animal’s body, shaped like a little bag. It contains air, liquid, or some other substance.
The lungs consist of millions of tiny air sacs.
N-COUNT
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006