A deep-seated psychological or emotional problem is difficult to cure or resolve, often requiring more than just conventional remedies.
他自从失去宠物后，心情一直低落，这种心病难医，需要朋友和家人的长期陪伴开导。
Ever since he lost his pet, his mood has been low; such a deep-seated emotional problem is hard to cure and requires long-term companionship and guidance from friends and family.
Era:
Ancient
Frequency:
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