(~s)
When an astronaut goes on a ~, he or she leaves the spacecraft and works outside it while floating in space.
N-COUNT
(~s)
When an astronaut goes on a ~, he or she leaves the spacecraft and works outside it while floating in space.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012