keep a lookout for

US /kiːp ə ˈlʊk.aʊt fɔːr/
UK /kiːp ə ˈlʊk.aʊt fɔːr/
"keep a lookout for" picture
1.

mantenerse atento a, estar atento a

to watch carefully for someone or something, especially to prevent danger or to find something specific

:
Please keep a lookout for the delivery truck.
Por favor, mantente atento al camión de reparto.
We need to keep a lookout for any suspicious activity.
Necesitamos estar atentos a cualquier actividad sospechosa.