YOU SAID:
this post is not helpfull
INTO JAPANESE
この投稿は役に立ちません
BACK INTO ENGLISH
This post is useless
INTO JAPANESE
これは役に立たない。
BACK INTO ENGLISH
This is useless.
INTO JAPANESE
これは役に立たない。
BACK INTO ENGLISH
This is useless.
That didn't even make that much sense in English.