In Marxism, variable capital represents the value of labor power.

We need more labor force to make this project successful.

He is deeply immersed in the study of Marxism.

He has difficulty expressing his emotions in words.

He showed his gratitude on his face.

This program has elements of changeability.

This company is planning new investments to increase its capital.

He is a strong person.

Your opinion has great value.

He worked hard all day long.