scratch the surface
US /skrætʃ ðə ˈsɜːrfɪs/
UK /skrætʃ ðə ˈsɜːrfɪs/
1.
觸及皮毛, 淺嘗輒止
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.
我們才剛剛開始觸及這個複雜問題的皮毛。
•
There's so much more to learn; we've barely scratched the surface.
還有很多東西要學；我們才剛剛觸及皮毛。