harp on
US /hɑːrp ɑːn/
UK /hɑːrp ɑːn/
1.
insistir en, machacar con
to talk or write persistently and tediously on a particular subject
:
•
He keeps harping on about the good old days.
No para de insistir en los viejos buenos tiempos.
•
I wish she wouldn't harp on my mistakes.
Ojalá no insistiera en mis errores.