ser testigo de

(v.) = witness, be witness to, stand as + witness to

Ex. We sometimes only have to speak a word to witness a reaction in other people that should logically follow only if the object itself were present.

Ex. On several occasions he was witness to the sights and sounds of Balzac's emotionalism, including tantrum-pitched screaming, banging fists on desks, and slamming doors.

Ex. Today's users stand as witnesses to the formative stages of a totally networked society in the 21st century.

* * *

(v.) = witness, be witness to, stand as + witness to

Ex: We sometimes only have to speak a word to witness a reaction in other people that should logically follow only if the object itself were present.

Ex: On several occasions he was witness to the sights and sounds of Balzac's emotionalism, including tantrum-pitched screaming, banging fists on desks, and slamming doors.

Ex: Today's users stand as witnesses to the formative stages of a totally networked society in the 21st century.