Bone marrow is the soft fatty substance inside human or animal bones.
There are 2,000 children worldwide who need a ~ transplant.
= marrow
N-UNCOUNT
Bone marrow is the soft fatty substance inside human or animal bones.
There are 2,000 children worldwide who need a ~ transplant.
= marrow
N-UNCOUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012