be subject to changing moods;be given to capricious moods;April weather;

However, there are selfish and arrogant, irritable, moody, vanity, waste shortcomings.
但也有自私、自大 、 易怒 、 喜怒无常 、 虚荣 、 浪费等缺点.
来源:网络文摘精选Sometimes he's fun to be with; at other times he can be very moody.
有时候他很有风趣, 可也有时候脾气一上来就喜怒无常.
来源:词典精选例句The actress was so temperamental that many people refused to work with her.
那位女演员喜怒无常,许多人都拒绝和她合作.
来源:词典精选例句He became moody and unreasonable , flailing out at Katherine at the slightest excuse.
他变得喜怒无常、不可理喻, 为点鸡毛蒜皮的小事就殴打凯瑟琳.
来源:《简明英汉词典》
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