( proving grounds)
If you describe a place as a proving ground , you mean that new things or ideas are tried out or tested there.
New York is a proving ground today for the Democratic presidential candidates.
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( proving grounds)
If you describe a place as a proving ground , you mean that new things or ideas are tried out or tested there.
New York is a proving ground today for the Democratic presidential candidates.
N-COUNT
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006