adj.复杂的，难以解决的，棘手的，有节的，缠绕在一起的

原形：knotty比较级：knottier最高级：knottiest

Eric was concocting a particularly knotty editorial.
埃里克正在拼湊一篇特別烧脑的社论。
Tom made his mind to solve the knotty problem by himself.
汤姆下决心自己解决这个棘手的问题。
Eric tackled the knotty problem without recourse to any help.
埃里克不依靠任何人的帮助而独立处理这一难题。
The knotty problem has been troubling the research team for months.
这个棘手的问题已经困扰研究团队好几个月了。
She tried to untangle the knotty mess of strings, but it seemed impossible.
她试图解开那团乱糟糟的绳子，但似乎是不可能的任务。
The old tree's trunk was covered in knotty protrusions, each telling a story of its long life.
老树的树干上布满了节瘤状的突起，每一个都诉说着它漫长的生命故事。
The novel explores the knotty emotional entanglements between the characters.
这部小说探讨了角色之间复杂的感情纠葛。
After hours of discussion, they finally found a solution to the knotty issue.
经过数小时的讨论，他们终于找到了解决这个棘手问题的办法。
The mathematician was known for his ability to unravel even the most knotty equations.
这位数学家以其解开最复杂方程的能力而闻名。
The knotty wood made for a beautiful, rustic texture in the handmade furniture.
这种节疤木材为手工家具增添了一种美丽而质朴的质感。
Understanding the knotty legal procedures requires a deep knowledge of the law.
要理解这些复杂的法律程序，需要对法律有深入的了解。
The knotty question of ethics in artificial intelligence continues to challenge philosophers and technologists alike.
人工智能伦理中的棘手问题继续挑战着哲学家和技术专家。
He spent hours carefully carving the intricate, knotty pattern into the wooden sculpture.
他花了几个小时仔细地在木雕上雕刻出复杂的节疤图案。