Definition
Experiencing a state of mental instability or impaired cognitive function.
精神狀態不正常；神智不清。
His recent behavior is very strange; I think he must not be in his right mind.
他最近的行為很奇怪；我覺得他一定神智不清。
You must not be in your right mind to think this is a good idea.
你一定神智不清才會認為這是個好主意。
Ever since the accident, she often says nonsensical things; it feels like she is not in her right mind.
自從那次事故後，她經常說些胡言亂語；感覺她神智不清。