1. These discoveries challenge our traditional understanding of human evolution.
这些发现挑战了我们对人类进化的传统理解。
2. Scientists have proposed new theories to challenge old views.
科学家们提出了新的理论来挑战旧的观点。
3. This project is a huge challenge.
这个项目是一个巨大的挑战。
4. He accepted a challenge to prove he could do it.
他接受了一个挑战,证明自己可以做到。
5. Challenging yourself is key to growth.
挑战自我是成长的关键。