YOU SAID:
I did not know that wind
INTO JAPANESE
私はその風を知らなかった
BACK INTO ENGLISH
I did not know that
INTO JAPANESE
知りませんでした。
BACK INTO ENGLISH
I did not know that.
INTO JAPANESE
知りませんでした。
BACK INTO ENGLISH
I did not know that.
You've done this before, haven't you.