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observer [observers]▼(one who makes observations, monitors or takes notice)noun[UK: əb.ˈzɜː.və(r)] [US: əb.ˈzɝː.vər]
observatory [observatories]▼(place where celestial bodies or natural phenomena are observed)noun[UK: əb.ˈzɜː.vət.r̩i] [US: əb.ˈzɝː.və.ˌtɔː.ri]
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