n.愚蠢，愚笨，愚蠢的想法(或事情、行为)，(常见于旧时乡间豪宅花园中的)装饰性建筑

原形：folly复数：follies

Folly often leads to regrettable actions.
愚蠢常常导致令人遗憾的行为。
She indulged in her foolish fancy of becoming a professional dancer.
她沉溺于成为一名专业舞者的愚蠢幻想。
His reckless decision was a display of childish folly.
他鲁莽的决定是孩子气的愚蠢表现。
It's better to learn from one's mistakes than to repeat the same folly.
从错误中学习总比重复同样的愚蠢要好。
Don't let your emotions lead you into the folly of making hasty decisions.
不要让情绪驱使你陷入草率决策的愚蠢之中。
The king's folly in trusting the traitor led to the downfall of his kingdom.
国王信任叛徒的愚蠢最终导致了他的王国覆灭。
Her stubbornness was a form of foolish obstinacy that got her into trouble.
她的固执是一种愚蠢的顽固，给自己带来了麻烦。
It's foolish to ignore expert advice when it comes to matters of health.
在健康问题上忽视专家意见是愚蠢的。
His foolish attempt to cross the river without a boat resulted in a dangerous situation.
他没有船就尝试过河的愚蠢行为造成了危险的局面。
The young man's decision to invest all his savings in a single stock was a clear case of financial folly.
那个年轻人把所有积蓄都投入到一只股票中的决定，无疑是财务上的愚蠢。