To solve the mystery, the detective had to scratch below the surface of everyone’s alibi.

After years of use, someone scratched beneath the surface of the antique dresser, revealing a different wood tone.

The detective kept scratching beneath the surface of every alibi until the truth emerged.

By scratching below the surface, the journalist uncovered motives that everyone had missed.

Although he smiled, there was a sadness beneath the surface.

If you scratch beneath the surface, you'll discover a community that quietly preserves its traditions.

In the lecture, the professor illustrated how minimal surfaces arise in soap films spanning wireframes.

Riemann surfaces provide a natural setting to study complex analytic functions with branching behavior.

The surface tensions of the droplets changed depending on the concentration of the surfactant.

Delivery drivers preferred using surface streets during rush hour to avoid tolls on the highway.