The phrase "after two stages" is correct and usable in written English.
It can be used to indicate a sequence of events or processes that occur following the completion of two distinct phases.
Example: "The project will proceed to the next phase after two stages have been completed."
Alternatives: "following two stages" or "subsequent to two stages".
Yup, after two stages almost as flat as the atmosphere at the Emirates, the organisers of the Giro have put their heads together and decided that what this boys need is some nice clean mountain air and mountain air is what they are going to get, by the bloody bucket load.
All the GHA has been recovered in PEG-rich phase after two stages of extraction process in this modified centrifuge which function as a purifier for continuous processing (Rosa et al. 2010).
After two stages in Yorkshire, on Monday 7 July about 200 elite Tour de France cyclists will travel from Cambridge, through Essex, into London before finishing that stage on The Mall.
After all, I won't be the first or last to do this kind of thing". Colombia's Esteban Chaves leads the general classification at the Vuelta by five seconds after two stages of a race that ends on 13 September in Madrid.
After two stages of rigorous selection, Dreamdelion came out as winner of Hult Prize at Universitas Indonesia.
In contrast, isolates from the late phase showed no sign of positive selection, implying the S protein became stable again after two stages of adaptive evolution.
After five stages of experimentation, a 65% improvement in signal-to-noise ratio was achieved.
So after four stages, Martin is finally in yellow and seems likely to remain in it until Friday at least.
As for the Tour Down Under, after four stages in this six-stage race, Armstrong was 39 seconds off the lead, held by Allan Davis, an Australian with the Quick Step team.
Returning to Italy after three stages in the Netherlands, Ulissi put an Italian stamp on the race after the Dutchman Dumoulin took the opening time trial and Marcel Kittel of Germany won the first two sprints.
Tejay van Garderen won the individual time trial in Vail, Colo., to extend his overall lead to 1 minute 30 seconds after five stages in the USA Pro Challenge.
