three, two, one
À partir de maintenant, il te suffira de compter trois, deux, un.
From now on, all you have to do is count three, two, one.
— The Wandering Earth (2019)
Déclenchement de la séquence d'activation dans trois, deux, un.
Activation sequence commencing in three, two, one.
— Star Trek Into Darkness (2013)