English Dictionary

hold a mirror to

verb

To reflect; to represent and by resemblance provide insight into. / To elucidate; to make explicit some aspect of. / Used other than figuratively or idiomatically: see hold, mirror.

She held a mirror to her face and examined her reflection.

意味（1）

To reflect; to represent and by resemblance provide insight into.

Or, as Dr. Gregory Stevenson suggests, do the supernatural trials and tribulations of the Winchesters appeal because they merely hold a mirror to the more mundane terrors we all face every day?

意味（2）

To elucidate; to make explicit some aspect of.

To speak truth to power should not be considered negative: to hold a mirror to society, even a mirror that embodies the biases and anguish of its creator, is not a negative act.

意味（3）

Used other than figuratively or idiomatically: see hold, mirror.

Hold a mirror to the pet's nose. If no condensation appears, the animal is probably dead.