In astronomy the big bang theory is a theory that suggests that the universe was created as a result of an extremely large explosion.
N-SING : the N
In astronomy the big bang theory is a theory that suggests that the universe was created as a result of an extremely large explosion.
N-SING : the N
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006