He preaches about Buddhism every day at the temple.

This issue is against our national law.

He is good at solving trigonometry problems.

This library adopts its own classification method.

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

He conducted the trial based on common law.

He perfectly understands the correct orthography of Japanese.

He is working with a devilish method.

He drew a picture using perspective.

Kenpo is my best friend.