give something/someone the once-over
US /ɡɪv ˈsʌmˌθɪŋ ˈsʌmˌwʌn ðə wʌns ˈoʊvər/
UK /ɡɪv ˈsʌmˌθɪŋ ˈsʌmˌwʌn ðə wʌns ˈoʊvər/

1.
dar un vistazo rápido a, echar un ojo a
to quickly look at someone or something, especially to check them or to form an opinion of them
:
•
The mechanic gave the car the once-over before the long trip.
El mecánico le dio un vistazo rápido al coche antes del largo viaje.
•
She gave him the once-over, deciding if he was trustworthy.
Ella le dio un vistazo rápido, decidiendo si era digno de confianza.