YOU SAID:

This is hard to study, but I will keep on.

INTO JAPANESE

これは勉強が難しいですが、私は続けます。

BACK INTO ENGLISH

It is difficult to study this, but I will continue.

INTO JAPANESE

これを研究するのは難しいですが、私は続けます。

BACK INTO ENGLISH

It is difficult to study this, but I will continue.