延续他的工作艰苦而富有挑战性。

The task of succeeding him is difficult and challenging. But I will know how to honor his legacy.

富有挑战性。

Being challenging.

有些运动富有挑战性，许多年轻人喜欢。

Some sports are challenging and many young men like them.

学习管理压力是一个富有挑战性的生活技能。

Learning to manage stress is a challenging life skill.

乘爱斯基摩划子富有挑战性, 有点令人害怕.

The kayaking is challenging, somewhat scary.

背景: 对可疑冠状动脉疾病患者行无创性检查富有挑战性.

Background: Noninvasive testing for suspected coronary artery disease is challenging.

所以我的提问接下来将变得更富有挑战性，也就是往矩阵的右上角发展。挑战性的提问能使听众进入思考。

So as you move through your presentation move towards the top-right corner and ask more challenging questions which will get your audience thinking.

自然保护成为人类所面临的最重要也最富有挑战性的任务。

Nature conservation becomes a upmost important and quite challenging task.

他的工作十分富有挑战性：并且占据了他所有的想法和想象力。

His work was complex: it engaged his mind and imagination.

意识研究是心理学中的一大难点，也是一项富有挑战性的工作。

The study of consciousness is difficult, and challengeable as well for psychological researchers.