adj.不相信的，怀疑的

I find it unbelievable that he finished the marathon in under three hours.
我简直不敢相信他能在三小时内完成马拉松。
She was absolutely incredulous when she heard the news of her lottery win.
当她听到中奖的消息时，她完全难以置信。
His claims of being an alien were met with widespread disbelief.
他自称是外星人的说法遭到了广泛的怀疑。
It's unbelievable how much energy he still has after working all day.
他工作一整天后还有那么多精力，真是令人难以置信。
The magician's disappearing act left the audience completely nonplussed and unbelieving.
魔术师的消失表演让观众惊讶得无法相信。
The team's comeback victory was nothing short of miraculous, leaving everyone in disbelief.
这支队伍的逆转胜利简直是奇迹，让人难以置信。
After years of hard work, seeing him land a top job is simply astonishing.
经过多年的努力，他能得到这份高薪工作真是令人难以置信。
The ancient ruins discovered in the jungle defied all previous beliefs about their existence.
在丛林中发现的古代遗迹与之前的任何信念都相悖。
The crowd couldn't believe their eyes when they witnessed the impossible feat.
当他们亲眼看到这个不可能的壮举时，人群中充满了难以置信。
The scientist's theory on time travel remains largely unbelievable by the scientific community.
科学家关于时间旅行的理论在科学界仍然难以接受。