YOU SAID:

this defeats the purpose of the effort

INTO JAPANESE

これは努力の目的を打ち破る

BACK INTO ENGLISH

This breaks down the purpose of the effort.

INTO JAPANESE

これは努力の目的を打破します。

BACK INTO ENGLISH

This will break down the purpose of the effort.

INTO JAPANESE

これは努力の目的を打破するでしょう。

BACK INTO ENGLISH

This will break down the purpose of the effort.