On cold nights, a warm quilt is necessary.

Watching a movie alone is enjoyable.

One part is important.

Software engineering is a field of study related to the design and development of computer programs.

He is attending a college preparatory school.

He is an expert in fiber optics.

He is known as an expert in palaeoclimatology.

He is majoring in astronautics.

My major is mechanical engineering.

He is an expert in systems engineering.