think twice
US /θɪŋk twaɪs/
UK /θɪŋk twaɪs/

1.
pensárselo dos veces, reflexionar
to consider carefully before doing something
:
•
You should think twice before quitting your job.
Deberías pensártelo dos veces antes de dejar tu trabajo.
•
She didn't think twice about helping him.
No se lo pensó dos veces antes de ayudarlo.