The phrase "different stages" means that there are various points or periods of time in a process or development, each with its own characteristics or progress. Full definition
What makes the probe so versatile is its ability to not only seek out and highlight cancer cells, but also to reveal the metabolic nuances of different stages of cancer development. (sciencedaily.com)
This brief guideline demonstrates toy types your child may be interested in at different stages of development. (day2dayparenting.com)
I've seen deals fall through at different stages in the buying / selling process. (biggerpockets.com)