The phrase "are unable to formulate" is correct and usable in written English.
It can be used when discussing a lack of ability to create or express something, such as ideas, plans, or responses.
Example: "Despite numerous discussions, the team are unable to formulate a clear strategy for the project."
Alternatives: "cannot create" or "are not able to express".
If such agreement exists; it matters little for the DN model if we are unable to formulate completely general criteria that distinguish between laws and accidentally true generalizations in all possible cases.
This non-wetting property is enhanced by the use of specific nanoforce gradients that occur based on the sizes of the microscopic features, which create an energetically unstable surface to which the micro-organisms are unable to formulate stable attachment modes [42].
One interviewee explained that: "Health technologies are of great importance when physicians are unable to formulate a diagnosis based on physical examination, for example, when an affected organ does not have any pain receptors that could signal the pain, or when the affected organ is not directly accessible to physicians" (Int #7).
Most of his friends believe that his genius projects far beyond the limits of art; they measure him less as an artist than as an inventor, whose paintings are only illustrations of what he has been unable to formulate in any other way.
By contrast, natural scientists must presuppose that nature is uniform, or they would be unable to formulate the inductive generalisations on which their predictions are based.
Accordingly, Sozaboy's repeated emphasis on renegade organs, disembodied voices, and Mene's involuntary bodily response can be thought of as moments in which the environment speaks what the befuddled human protagonist is unable to formulate.
I've learned this the hard way--stumbling occasionally in my own career when I couldn't find help or was unable to formulate the questions I needed to ask.
We're unable to formulate the right words to express what kind of repercussions and impact this has on our lives, so we're just going to post the whole email and let it speak for itself.
In 1992 psychologist John A. Lucy published two books on the topic, one analyzing the intellectual genealogy of the hypothesis, arguing that previous studies had failed to appreciate the subtleties of Whorf's thinking; they had been unable to formulate a research agenda that would actually test Whorf's claims.
Since a number of things influence patterns of practice behaviour for physicians, researchers have been unable to formulate a theory of physician behaviour change.
