This lake is very deep.

His eyes were filled with deep sorrow.

Don't take his joke seriously.

His words had a great influence.

That decision had a bad effect on our project.

He is deepening his research on Sinocentrism.

Maoism is an important element in forming Chinese communism.

Freedom of thought is one of the basic human rights.

He was imprisoned as a political prisoner for political reasons.

He lost everything.