keep your ear to the ground

US /kiːp jʊər ɪər tə ðə ɡraʊnd/
UK /kiːp jʊər ɪər tə ðə ɡraʊnd/
"keep your ear to the ground" picture
1.

estar atento, estar al tanto, tener el oído pegado al suelo

to pay attention to what is happening around you in order to be aware of new developments or opportunities

:
You need to keep your ear to the ground if you want to find a good job in this industry.
Necesitas estar atento si quieres encontrar un buen trabajo en esta industria.
The detective always keeps his ear to the ground for any new leads.
El detective siempre está atento a cualquier nueva pista.