They were put in a situation of confrontation.

He is studying about Einstein's theory of relativity.

The dialogue with him is always fun.

This object is the focus of my research.

This is absolutely without a doubt.

He likes to take a walk in the park at dusk.

We should always remember the power of Kannon in difficult times.

He learned how to operate the anti-tank gun.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.