We are going on a trip together.

Don't take his joke seriously.

He is a famous psychologist, influencing many people.

I am majoring in psychology.

We conducted a psychological test in today's class.

He engaged in psychological warfare in the chess match.

He is known as an expert in criminology.

He was born as an illegitimate child and experienced many difficulties.

My grandfather used to till his privately-owned rice field.

Using the private railway makes commuting very convenient.