keep calm
US /kiːp kɑːm/
UK /kiːp kɑːm/

1.
mantener la calma, estar tranquilo
to remain relaxed and not get excited or worried
:
•
No matter what happens, just keep calm and carry on.
Pase lo que pase, solo mantén la calma y sigue adelante.
•
It's important to keep calm during an emergency.
Es importante mantener la calma durante una emergencia.