moody
adjective uk/ˈmuː.di/ us/ˈmuː.di/
心情多变的，喜怒无常的
If someone is moody, their moods change suddenly and they become angry or unhappy easily.
a moody teenager 情绪多变的少年
He can be moody. 他有时脾气很坏。
神秘的；略带悲伤的
expressing something mysterious or slightly sad
The film has a moody jazz score. 这部电影的配乐是略带悲伤的爵士乐。