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

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.

He is good at solving trigonometry problems.

This library adopts its own classification method.

He surprised people by using magic.

Understanding patent law is important for protecting new inventions.

Ex post facto laws pose a problem for a fair legal system.

He conducted the trial based on common law.