Translation examples
This pen, for example, had traces of a type known as permanent fluorescing ink, imperceptible to the human eye, and revealed only under an ultraviolet light.
Prendiamo questa penna. Ci sono tracce di un tipo d'inchiostro noto come inchiostro indelebile fosforescente. Invisibile ad occhio nudo e rilevabile solo con i raggi ultravioletti.
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