The phrase "at uncertain" is not correct in written English.
It is not a standard expression and does not convey a clear meaning.
Example: "The project's timeline is at uncertain stages, making it difficult to predict completion."
Alternatives: "in doubt" or "uncertain".
Apparently there are other reports floating about, which come at uncertain hours but which can also be picked up.
If the Supreme Court doesn't overturn that decision, the cases will continue through the courts and the dreamers' protections will be restored at uncertain rates.
The proposed methodology is evaluated with statistical indices of the confidence in estimating thermal fouling resistance at uncertain operating conditions, explored in a series of case studies.
We determined optimal dynamic reserve selection strategies when selections are made in imminently threatened and presently secure areas that will become threatened at uncertain times in the future.
This weekend the United Seniors Association began the first phase of a 10-state, $2 million radio and television campaign aimed at uncertain lawmakers like moderate Senate Republicans from New England.
However, problems in oil drilling, combustion dynamics, and other applications give rise to wave PDE models, which are not only unstable, but have all of their infinitely many eigenvalues at uncertain locations in the right half plane (anti-stable).
