YOU SAID:

What do you know how to do that's useless?

INTO JAPANESE

あなたはそれが役に立たない方法を知っていますか?

BACK INTO ENGLISH

Do you know how it's useless?

INTO JAPANESE

あなたはそれが役に立たない方法を知っていますか?

BACK INTO ENGLISH

Do you know how it's useless?