A student is caught cheating with his cell-phone, and Chiaki is super-mad! He calls all the students to an assembly and angrily threatens to destroy the phone of anybody who's caught with one on school grounds.  The students begin to get angry...
And definitely not while walking.
وليس أثناء المشي بالتأكيد
Und untersteht euch,
mit dem Handy in der Hand rumzulaufen.
Y definitivamente, no al caminar.
E naturalmente scordatevi di usarli 
mentre camminate.
e, sob hipótese alguma, caminhando.
И ни в коем случае не на ходу.