Each passing year has added new refinements.

Over the past few years, we've just kept on adding refinements to it.

But the ailing machinery had long ago been piecemeal replaced, and the visiting crews added refinements every decade or so.

Those published from 1910 to 1920 gradually added greater refinements and recognized more soil features but retained fundamentally geological concepts.

Most of its features are quite the same, but CyberConnect2 has added enough refinements for the game to once again sell big in Japan.

Prince later reworked the live recording in the studio, adding overdubs and other refinements.

Now he waits and watches, and sometimes he adds refinements to his preparations.

Ampex, too attentive to professional customers, kept adding costly refinements.

It also added further refinements to the previous game's play mechanics and rules.

They both add further refinements, including using certain personal identifying information, like an e-mail address, as part of the call and response system.