scratch the surface
US /skrætʃ ðə ˈsɜːrfɪs/
UK /skrætʃ ðə ˈsɜːrfɪs/
1.
arañar la superficie, tocar por encima
to deal with only a very small part of a subject or problem
:
•
We've only begun to scratch the surface of this complex issue.
Solo hemos empezado a arañar la superficie de este complejo problema.
•
There's so much more to learn; we've barely scratched the surface.
Hay mucho más que aprender; apenas hemos arañado la superficie.