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detect [detected, detecting, detects]▼(to discover or find by careful search, examination, or probing)verb[UK: dɪ.ˈtekt] [US: də.ˈtekt]
perceive [perceived, perceiving, perceives]▼(to become aware of)verb[UK: pə.ˈsiːv] [US: pər.ˈsiːv]
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