"express ignorance" is a correct and usable phrase in written English.
You can use it to indicate that someone is showing or revealing their lack of knowledge in a certain subject. For example, "John expressed ignorance about the mechanics of the project, revealing he had not thoroughly done his research."
DealBook » British Panel Castigates Ex-UBS Officials at Hearing | A parliamentary panel denounced the former UBS bankers for expressing ignorance of the Libor manipulation during the financial crisis.
There was some confusion at first, with Freudenheim, a quietly spoken American, expressing ignorance as to who Healy was, although this was explained by the fact that the book had never been published in the US.
DealBook » British Panel Castigates Ex-UBS Officials at Hearing | A parliamentary panel denounced the former UBS bankers for expressing ignorance of the Libor manipulation during the financial crisis, Mr. Scott reported.
However, this response misses the mark if the prior distribution expresses ignorance rather than opinion: it seems harder to defend the rationality of differences of opinion that stem from different ways of spelling out ignorance.
When their teachers expressed ignorance about Sikhism, the students stepped up to help explain key concepts and even developed classroom materials to help their teachers.
Carroll likewise expressed ignorance, saying, "I hadn't checked on the whole process of how our footballs were handled until this week... but I know every step of it now".
The other position, that of classical pantheism, says that though God includes all within himself, he cannot be complex or mutable, for such categories only express human ignorance and illusion.
The prior will have to express her ignorance concerning the hypotheses.
It is rather that in some cases, we do not even know what parameters to use to express our ignorance over.
But the only respondent to express substantial ignorance about all these crucial mappings, from premium purchase to ecosystem service delivery, was a (realistic) professional expert in marketing and certification.
