(observatories)
An ~ is a building with a large telescope from which scientists study things such as the planets by watching them.
N-COUNT
(observatories)
An ~ is a building with a large telescope from which scientists study things such as the planets by watching them.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012