The UV light in the pen cap provides a second authentication test by revealing the embedded micro-printed strip in genuine currency.
探测笔帽上的UV灯能够进行第二次鉴别测试，通过UV灯能显示出真钞的植入式的微印条。
The UV light in the pen cap provides a second authentication test by revealing the embedded micro-printed strip in genuine currency.
探测笔帽上的UV灯能够进行第二次鉴别测试，通过UV灯能显示出真钞的植入式的微印条。
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