YOU SAID:

Some things which are beneficial are also illegal, and some things which are harmful are also legal.

INTO JAPANESE

有益なものは違法であり、有害なものも合法です。

BACK INTO ENGLISH

Beneficial ones are illegal and harmful ones are legal.

INTO JAPANESE

有益なものは違法で有害なものは合法です。

BACK INTO ENGLISH

Things that are beneficial are illegal and harmful are legal.

INTO JAPANESE

有益なことは、違法・有害な。

BACK INTO ENGLISH

Things to do is illegal and harmful.

INTO JAPANESE

やることは違法・有害です。

BACK INTO ENGLISH

It is illegal and harmful to do.

INTO JAPANESE

あそこに駐車するのは違法です。

BACK INTO ENGLISH

It is illegal to park a car there.

INTO JAPANESE

あそこに駐車するのは違法です。

BACK INTO ENGLISH

It is illegal to park a car there.