Could you expand upon this?
Let's take CAD as an example. We've got a source language: a constructive solid geometry, for simplicity. Pretty much everything a CAD does boils down to various transforms of this language - into an optimised octree for rendering purposes, into G-code slices for production, into, say, SVG for blueprints, etc.
CRUD stuff boils down to transforms between different semantic domains - a relational structure at one end and workflow graphs and document trees on another.
It's really hard to come up with any practically important problem domain which would not benefit from being represented in terms of languages and transforms.