YOU SAID:

I am well aware that the banana is indeed monkey sized

INTO JAPANESE

私はバナナが確かに猿のサイズであることをよく知っている

BACK INTO ENGLISH

I know very well that bananas are certainly the size of monkeys

INTO JAPANESE

バナナは確かに猿くらいの大きさであることはよく知っています

BACK INTO ENGLISH

We know very well that bananas are certainly about the size of monkeys.

INTO JAPANESE

バナナは確かにサルくらいの大きさだということはよく分かっています

BACK INTO ENGLISH

We know that bananas are about the size of a monkey.

INTO JAPANESE

バナナは猿くらいの大きさだとわかっています

BACK INTO ENGLISH

We know that bananas are about the size of monkeys.

INTO JAPANESE

バナナはサルくらいの大きさだとわかっています

BACK INTO ENGLISH

We know that bananas are about the size of a monkey.

INTO JAPANESE

バナナは猿くらいの大きさだとわかっています

BACK INTO ENGLISH

We know that bananas are about the size of monkeys.

INTO JAPANESE

バナナはサルくらいの大きさだとわかっています