YOU SAID:

I think you should try to type there some complicated sentence.

INTO JAPANESE

複雑な文をそこに入力してみるべきだと思います。

BACK INTO ENGLISH

I think you should enter a complex sentence there.

INTO JAPANESE

そこで複雑な文を入力する必要があると思います。

BACK INTO ENGLISH

So I think you need to enter complicated sentences.

INTO JAPANESE

ですから、複雑な文章を入力する必要があると思います。

BACK INTO ENGLISH

So I think you need to enter complicated sentences.