build in
US /bɪld ɪn/
UK /bɪld ɪn/

1.
incorporar, incluir
to include something as a permanent part of a system, plan, or structure
:
•
The software has a security feature built in.
El software tiene una función de seguridad incorporada.
•
We need to build in some flexibility into the schedule.
Necesitamos incorporar cierta flexibilidad en el horario.