scanner

scanner
noun
  1. a device for examining, reading, or monitoring something, in particular
    扫描器,尤指
    ■(Medicine)a machine that examines the body through the use of radiation, ultrasound, or magnetic resonance imaging, as a diagnostic aid
    (医)扫描仪
    ■(Electronics)a device that scans documents and converts them into digital data
    (电子)(扫描文件,使之转化为数字数据的)扫描器
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