The phrase 'a long practice' is correct and usable in written English.
You can use it when you are referring to something that has been done for a long time. For example, "Playing the piano has been a long practice for me."
Take someone who is tired after a long practice, give them a stimulant.
A long practice mirror, cracked in three directions, is held together with clear tape along the triangular cracks' seams.
Hoping for a long stay in the Stanley Cup playoffs, the Devils held a long meeting yesterday followed by a long practice.
"G.M. has a long practice of conservative accounting and accurate reporting on our financial condition and performance," G.M.'s chief executive, Rick Wagoner, said.
Germany has a long practice of extraditing to the United States in capital cases only if it receives assurances that conviction will not bring a death penalty, a legal expert at the German Max Planck Institute for Comparative Law said.
And, come to think of it, a long practice of za-zen might be required before we could so empty our minds as to open up one of Beckett's texts and hear simply the words that are there.
"He doesn't have to apologize to me," Steve Novak said after an unusually long practice session.
Each participant completed a one-hour long practice session outside the scanner between 2 weeks and 3 days prior to his or her scanning session.
We met up and discussed it and in a few long practices had enough material for a set.
The embrace of such a genre as a career-long practice was a surrender to adventure, undertaken with no knowledge of how the story would continue.
In a simple kitchen, three volunteers are chopping tomatoes, onions and mushrooms with a speed born of long practice.
