n.愚蠢的行为，疯狂，精神病，精神错乱，精神失常

原形：lunacy复数：lunacies

His decision to quit his well-paid job and travel the world was considered lunacy by his friends.
他的朋友们认为他放弃高薪工作去环游世界是疯狂的行为。
The belief that the Earth is flat, in this day and age, is sheer lunacy.
在这个年代还相信地球是平的，简直是荒谬至极。
It would be lunacy to invest all your savings in a single stock.
把所有积蓄都投资在一只股票上绝对是疯了。
Her suggestion to swim across the English Channel in winter was regarded as bordering on lunacy.
她提议冬天横渡英吉利海峡被认为近乎疯狂。
The notion that we can solve our climate crisis without reducing carbon emissions is pure lunacy.
认为我们可以在不减少碳排放的情况下解决气候危机完全是痴心妄想。
Refusing medical treatment for a life-threatening illness is lunacy, not bravery.
对于威胁生命的疾病拒绝治疗不是勇敢，而是疯狂。
Proposing to walk on the moon with no space suit is utter lunacy.
提议不穿宇航服在月球上行走完全是彻底的疯狂。
To think that technology alone will save us from our problems is lunacy; we must also change our behavior.
单纯认为技术就能解决我们所有问题的想法是愚蠢的，我们也必须改变行为。
Declaring war on a much stronger nation would be an act of lunacy.
宣布对一个实力远超自己的国家开战将是疯狂的举动。
Believing that money can buy happiness is a form of lunacy, for true contentment comes from within.
认为金钱能买到幸福是一种疯狂，因为真正的满足感来自内心。