difficult challenge

Examples (10)

• Climbing Mount Everest is a difficult challenge for even the most experienced mountaineers.
• Integrating the two companies after the merger proved to be a more difficult challenge than anyone anticipated.
• Finding a cure for the disease will be a difficult challenge for the next generation of scientists.
• Addressing climate change has presented a difficult challenge for world leaders.
• Transitioning to a new career path can be a difficult challenge, but it's often rewarding.
• Developing truly autonomous AI is a difficult challenge for computer scientists.
• He knew that overcoming his fear of public speaking would be a difficult challenge.
• The team is currently facing the difficult challenge of a tight deadline with limited resources.
• For many students, learning calculus presents a difficult challenge.
• The pioneers faced the difficult challenge of surviving their first winter in the new land.