remark on something
remark upon something

I turned to remark on it, but you had gone.

He hadn't remarked on them, and she had not asked.

In the same way, many have remarked on the issue of crisis management.

In fact, I fear that no one would even remark on it.

It would have been rather difficult to avoid doing so, though I did not remark on the fact.

Either way, it would be nice if people remarked on the "new you."

The days were long gone when anyone could remark on his handsome face.

I don't know if he ever remarked on this in connection with the film.

Otherwise the watch bill was normal, and no one remarked on the single change.

"Some people have remarked on a certain resemblance between us."