柯林斯词典bipolar disorder (bipolar disorders) 1. N-VAR Bipolar disorder is a mental illness in which a person's state of mind changes between extreme happiness and extreme depression. 躁郁症 返回 bipolar disorder剑桥词典a mental illness causing someone to change often from being extremely excited to being very depressed 躁狂抑郁症 返回 bipolar disorder