YOU SAID:

I am the fastest man in the world and the slowest woman in the world.

INTO JAPANESE

私は世界で一番速い男で、世界で一番遅い女性です。

BACK INTO ENGLISH

I am the fastest man in the world, the slowest woman in the world.

INTO JAPANESE

私は世界最速の男、世界で最も遅い女性です。

BACK INTO ENGLISH

I am the fastest man in the world, the slowest woman in the world.