The phrase "a certain key" is correct and usable in written English.
It can be used when referring to a specific key that is not named or identified, often in a context where the exact key is understood or implied.
Example: "To unlock the door, you will need to find a certain key that fits the lock."
Alternatives: "a specific key" or "one particular key".
Then the free-nodes are allocated into a certain key bi-community by some given rules.
But the Kyocera and Samsung models at least go mute when you hold down a certain key for two seconds.
If the unemployment rate fell below a certain key level, the textbooks said, prices would start rising.
In calibration mode, the computer interface sends a character to the computer to prompt the user to press a certain key.
By listening and interacting with the fans, he said he can respond immediately to their mood "if they feel like a certain cheer or they are riding the opposing goalie in a certain key".
To implement a trusted path, the keyboard driver recognizes a certain key sequence (Ctl-Alt-Del in Windows) and always then transfers control to some trusted software that displays a (password prompt) window and reads the contents.
Even among EDs that reported having an EMR, certain key functions were often absent.
His claim is that back in 2013 the chancellor, George Osborne, came up with the idea of charging drivers £10 a month to use certain key A roads and the money would be used to pay for road improvements.
I do the orientation part of Flash Collective because I'm trying to compact decades worth of experience with collectives into a [fifteen minute lecture] so that the participants can have a sense of certain key things: how to find the audience, how to communicate clearly in public spaces, how to interact with the collective, how to brainstorm, how to prioritise ideas.
I do the orientation part of Flash Collective because I'm trying to compact decades worth of experience with collectives into a [15 minute lecture] so that the participants can have a sense of certain key things: how to find the audience, how to communicate clearly in public spaces, how to interact with the collective, how to brainstorm, how to prioritize ideas.
If two populations have common ancestors but a large difference in certain key genes, a guess can be made about how long ago their ancestral peoples separated.
