do your bit
US /duː jʊər bɪt/
UK /duː jʊər bɪt/

1.
poner de su parte, contribuir
to do one's share of a task; to make one's contribution to an effort
:
•
Everyone needs to do their bit to help clean up the park.
Todos deben poner de su parte para ayudar a limpiar el parque.
•
If we all do our bit, we can finish this project on time.
Si todos ponemos de nuestra parte, podemos terminar este proyecto a tiempo.