（通常指因醉酒或疾病导致视力）出现重影
to have a problem with your eyes so that you see two of everything, usually because you are drunk or ill
I started seeing double, then I fainted. 我的眼前开始出现重影，然后就晕了过去。
Completely out of the blue, he woke up one morning seeing double.
Unfortunately, side effects can include seeing double for a short time.
He started seeing double after the accident.
He later complained of feeling disoriented and seeing double.
I thought I must be seeing double!
See also: double adverb