adj.易变的，无常的，反复无常的

原形：fickle比较级：fickler最高级：ficklest

Her mood swings were notorious; one moment she'd be ecstatic, the next utterly fickle, leaving everyone around her confused.
她的情绪波动是出了名的；一会儿兴高采烈，转瞬之间又变得反复无常，让周围的人都感到困惑。
The fickle weather of the mountains meant we had to pack for all four seasons, even though our hike was in summer.
山区天气变幻莫测，意味着即使我们在夏天徒步，也得准备好四季的衣物。
He was tired of dating fickle women who changed their minds about him as quickly as they changed their outfits.
他厌倦了与那些善变的女人交往，她们对他的态度变化之快，就像换衣服一样。
The fashion industry is notoriously fickle, with trends coming and going within weeks.
时尚界以善变为名，潮流来去匆匆，往往几周内就会变换。
Investors in the stock market must navigate through fickle investor sentiment that can shift rapidly based on the slightest economic news.
股市中的投资者必须应对变幻莫测的市场情绪，这种情绪会根据最微小的经济新闻迅速转变。
Her taste in music was incredibly fickle; one week she'd be obsessed with jazz, the next it would be heavy metal.
她对音乐的喜好极为多变，这一周可能迷恋爵士乐，下周就转向重金属了。
The fickle nature of the audience meant that the band had to constantly reinvent themselves to stay relevant.
观众喜好的多变性迫使乐队不得不持续地改造自己以保持新鲜感。
The fickle memory of the public meant that even the most scandalous news story would fade away within days.
公众记忆的短暂意味着即便是最耸人听闻的新闻故事也会在几天内被淡忘。
The success of the restaurant depended heavily on the fickle preferences of food critics and influencers.
这家餐厅的成功在很大程度上依赖于美食评论家和网红们多变的偏好。
In politics, popularity can be fickle; today's hero can quickly become tomorrow's villain if they fail to meet the people's expectations.
政治上的受欢迎程度是多变的；如果不能满足民众的期望，今天的英雄很快就会变成明天的反派。