His service record is very excellent.

He is active as the chief information officer of our company.

The Paleolithic is the first era of human history.

The Neolithic was an important period in human history.

He is known as an expert in psychoanalysis.

As the name suggests, chordates are a group of animals that have a notochord.

The spinal reflex is a part of our body that reacts automatically.

He is truly a person who embodies the saying, 'A man of virtue will naturally attract admirers.'

He was deeply grieving the death of his family.

His performance is generally good.