dip into

US /dɪp ˈɪntuː/
UK /dɪp ˈɪntuː/
"dip into" picture
1.

echar mano de, recurrir a

to spend some of a sum of money that you had intended to save

:
I had to dip into my savings to pay for the car repairs.
Tuve que echar mano de mis ahorros para pagar las reparaciones del coche.
She didn't want to dip into her retirement fund.
Ella no quería echar mano de su fondo de jubilación.
2.

echar un vistazo a, hojear

to read or study a book or subject in a casual or superficial way

:
I just had time to dip into the report, not read it thoroughly.
Solo tuve tiempo de echar un vistazo al informe, no de leerlo a fondo.
He likes to dip into various history books.
Le gusta echar un vistazo a varios libros de historia.