tachistoscope
tachistoscope[taˈkɪstəˌskəʊp]noun- an instrument used for exposing objects to the eye for a very brief measured period of time
视速仪,视觉记忆测试镜
派生tachistoscopicadjectivetachistoscopicallyadverb语源- late 19th cent.: from Greek takhistos 'swiftest' + -scope
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