Tsuyoshi is my best friend.

He is a very strong person.

His strength comes from his mental power.

He felt inferior in front of her talent.

He is occupied with the new project.

His words left a deep feeling in my heart.

His words were filled with deep feelings.

Vietnamese is one of the isolating languages, where the order of words is very important.

In physics, a solitary wave refers to the phenomenon where one wave exists independently from other waves.

He was left in a state of friendless isolation.