This report only scratches the surface of the problem
His brief introduction only scratched the surface of the complex topic
We've only scratched the surface of what's possible with this technology
The documentary scratched the surface of the social issues in the region
Don't worry, this exercise will just scratch the surface of the material
The article merely scratches the surface of the artist's extensive work
He has a vast knowledge, but his presentation only scratched the surface
This introductory course will help you scratch the surface of astrophysics
The initial investigation only scratched the surface of the criminal activity
You can't understand the full situation if you only scratch the surface
This is a complex topic, we've only begun to scratch the surface.
I agree, there is much more to explore.
We need more time to understand it fully.
We've only begun to scratch the surface of this problem
We've only just started to understand this issue
Our knowledge of this problem is still very limited