結果 : what is a portable breathalyzer
3:16

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FAQ: What is a Portable Breathalyzer?

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Preventing a DUI with a Portable Breathalyzer

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KPRC 2′s Owen Conflenti is testing a pocket-sized digital breathalyzer called a 'Smart Gear'

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CNET News - Tech Minute: Best Consumer Breathalyzers

CNET
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