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surgery [surgeries]▼(room or department where surgery is performed)noun[UK: ˈsɜː.dʒə.ri] [US: ˈsɝː.dʒə.ri]
operating system▼(software which controls computer)noun[UK: ˈɒ.pə.reɪt.ɪŋ ˈsɪ.stəm] [US: ˈɑː.pə.ˌret.ɪŋ ˈsɪ.stəm]
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