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efficiency [efficiencies]▼(extent to which time is well used)noun[UK: ɪ.ˈfɪʃn.si] [US: ə.ˈfɪ.ʃən.si]
productiveness▼(state of being productive)noun[UK: prəˈdʌktɪvnəs ] [US: prəˈdʌktɪvnəs ]
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