それは犯罪行為です。本当に罰せられますよ！の英語

That is a criminal offense, and you will surely be punished!

That is a criminal offense and you will surely be punished!

The crime calls for severe punishment.

The crime requires severe punishment―calls for severe punishment.

Crime connotes punishment.

I will risk the punishment.

That will be punished.

He deserves punishment.

Every crime calls for punishment.

Such an offence is punished by a fine and/or imprisonment.

Were we to do such a thing, we should be punished.

That is subject to punishment.

You richly deserve it

It serves you right

Serve you right!

being so vicious in behaviour as to be punished

If you do such a thing, Heaven will punish you for it―It is a profanation―a sacrilege―to do such a thing.

We'll get it this time.

We won't be able to escape punishment this time.

We won't be able to evade punishment this time.

We won't be able to avoid being punished this time.

You do such a thing once too often and get punished.

You will be punished if you break the law.

You'll be punished if you break the law.

These acts are crimes in Japan and will be punished.

of the action of a person, being so heinous that it is only natural that he/she be punished for it

He ought to be punished if he commits a crime.

We thought it wrong that you should punish him.

We thought it was absurd that you got punished.

It seems that the stuff about the fine was made up.