YOU SAID:

I am not conviced that the world is sound

INTO JAPANESE

私は世界が健全であると確信していません

BACK INTO ENGLISH

I'm not sure the world is healthy

INTO JAPANESE

世界が健全かどうかはわからない

BACK INTO ENGLISH

I don't know if the world is healthy

INTO JAPANESE

世界が健康かどうかはわからない

BACK INTO ENGLISH

I don't know if the world is healthy