He is my powerful rival.

He was taken to the hospital for an acute myocardial infarction.

Unpreparedness is the greatest enemy, let's always be careful not to neglect caution.

This park is completely artificially made.

Your friendship is very precious to me.

He treasures that experience.

He showed a hostile attitude towards me.

He is enduring mental pressure.

He is working with a devilish method.

This theory is universally accepted.