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

He holds a personal grudge against me.

Using the private railway makes commuting very convenient.

My diet is rich in protein.

His body build is like that of a sports player.

His constitution makes him prone to catching colds.

He has a susceptibility to depression, and tends to get down over little things.

He has cyclothymia, and his mood changes drastically.

The aerosol in this area is very dense.

That dog is reputed to be vicious.