The phrase "are constantly expanded" is correct and usable in written English.
It can be used to describe something that is continuously being increased or developed over time.
Example: "The capabilities of our software are constantly expanded to meet the evolving needs of our users."
Alternatives: "are continually growing" or "are always being enhanced."
Individual rights are constantly expanded, but responsibilities are shirked and scorned". Opponents, though, suggested that the amendment was the first step on a slippery slope.
This result suggests that gene families involved in signaling and to a lesser degree transport are constantly expanded in a lineage-specific manner, and more generally indicates consistent innovation in interaction with the environment.
Nor do ordinary Thais seem much concerned, despite the best efforts of the Democrats to stir up their indignation.Furthermore, Shin Corporation's business interests are constantly expanding.
If you're interested in pursuing computer science, remember that it's a relatively new field with so many subfields that are constantly expanding.
The building has more than 200 tenants who are constantly expanding, shrinking, coming and going, which makes for a lot of work, Mr. Crawford said.
The question of life on Mars has been in focus of astrobiological research for several decades, and recent missions in orbit or on the surface of the planet are constantly expanding our knowledge on Martian geochemistry.
The institute's programs are constantly expanding and are modified to meet the changing needs of industry, government, and other sectors.
We are constantly expanding this coordinated approach to develop the most advanced and clinically useful assays for our Duke lymphoma and leukemia patients.
We are constantly expanding our FM network, some of it being operated in some of the most dangerous, and to a certain degree, chaotic places in the world.
