This problem is difficult.

What does this sentence mean?

Humanities is an academic field that studies human culture and society.

He is doing a special exercise to strengthen his flexor carpi ulnaris.

The flexor carpi radialis is an important muscle for bending the wrist.

He left early to avoid the problem.

Did you hear his voice?

He is strong like a warrior.

I would rather go alone.

UNESCO is an international organization that promotes the development of education, science, and culture around the world.