also goldmine
If you describe something such as a business or idea as a gold mine , you mean that it produces large profits.
The programme was a gold mine for small production companies.
N-SING
also goldmine
If you describe something such as a business or idea as a gold mine , you mean that it produces large profits.
The programme was a gold mine for small production companies.
N-SING
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006