这块大理石板经过打磨后变得非常光滑。

The marble slab was polished to the ___smoothest texture.

这是我们合作过的最顺利的项目，没有任何延误。

This was the ___smoothest project we've ever collaborated on, with no delays at all.

他的萨克斯演奏流畅得令人陶醉。

His saxophone playing was the ___smoothest I've ever heard.