(~s)
An ~ is a medical doctor who specializes in diseases and problems affecting people’s eyes.
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(~s)
An ~ is a medical doctor who specializes in diseases and problems affecting people’s eyes.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012