spy on
US /spaɪ ɑːn/
UK /spaɪ ɑːn/

1.
espionner, surveiller
to secretly watch someone or something, especially to obtain information
:
•
The government was accused of trying to spy on its own citizens.
Le gouvernement a été accusé d'essayer d'espionner ses propres citoyens.
•
She felt like someone was spying on her.
Elle avait l'impression que quelqu'un l'espionnait.
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