Today’s “Phrase of the Day” is “hold a mirror up to“ and it is a phrase meaning “to take a look at oneself objectively to examine or reflect on things (issues) stemming from the reality of reflection; to reveal to someone about the way they look (differently) to the rest of the world (so that they can reflect upon themselves); expose, show up, bring to light (some (unpleasant) aspects to oneself)”.
Example Sentence: There’s an eight-year difference in life expectancy between the north and the south of the UK. These differences in life expectancy hold a mirror up to the inequalities across the nation.
What does "the reality of reflection" mean in the context given?