He is my best friend.

His goal was truly a miracle play.

He is an expert in psychiatry.

He found out the truth and was surprised.

He is really knowledgeable and always teaches us new information.

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.

Analytical chemistry is a science that reveals the composition and structure of substances.

By conducting self-analysis, you can understand your own strengths and weaknesses.

We conducted a meta-analysis on this issue.

He is an expert in chemical analysis.