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

1.
memerhatikan, mengawasi
to watch carefully for someone or something, especially to prevent danger or to find something specific
:
•
Please keep a lookout for the delivery truck.
Tolong perhatikan trak penghantaran.
•
We need to keep a lookout for any suspicious activity.
Kita perlu memerhatikan sebarang aktiviti mencurigakan.