The phrase "about one stage" is correct and usable in written English.
It can be used when discussing a specific phase or level in a process or development, often to indicate an approximation.
Example: "The project is about one stage away from completion, and we expect to finish by next week."
Alternatives: "approximately one stage" or "roughly one stage".
The Irish Brigade has denied it is a sectarian song, calling it "an historic, social commentary about one stage in a long freedom struggle".
"I think that the beautiful thing about the Tour de France is that it's not specifically about one stage, I think it's going to take a complete cyclist, but the stage that certainly stands out for me is the stage to Mont Ventoux," Froome said.
She wanted to hold forth about her craft and about her projects (at one stage acknowledging that she was veering into "master-class territory"), while I kept quizzing her on the ups and downs of her career.
Matt Winning barely acknowledges his Scottishness, although he does – out of character with the rest of his act – reads a cod-Robert Burns poem at one stage, about current affairs.
We were talking at one stage about the bourgeois life and I pointed out that two homes, two kids and a long-standing partner is a pretty conformist bourgeois position, about as far from Trocchi as a thinking person can get.
In the best conditions defined by a 25−2 fractional factorial design, starting with concentrations of 0.1 mol L−1 of nickel (5.9 g L−1) and 0.05 0.15 mol L−1 of cadmium (5.6 16.8 g L−1) it is possible to recover in only one stage about 99% of cadmium without precipitating more than 5% of nickel.
As Maynard Smith (1988) asked, "How did natural selection bring about the transition from one stage to another, since, at each transition, selection for 'selfishness' between entities at the lower level would tent to counteract the change?".
I have grandchildren to dote over and to brag about as they pass from one stage of life to the next on their way to becoming mature adults.
At one stage talking about going to the UN is an option.
Guagua Technology at one stage boasted about 20 employees, but moved out last year, a worker in its office block said.
The manslaughter charges, voted on by a grand jury that has been hearing evidence in the case for about a year, are just one stage of the inquiry, people involved in the matter have said.
