YOU SAID:

the earth is flat but spins fast making the round illusion

INTO JAPANESE

地球は平らだが高速回転して丸い錯覚をする

BACK INTO ENGLISH

Earth is flat but it rotates at high speed and makes a round illusion

INTO JAPANESE

地球は平らですが高速で回転して丸い錯覚をします

BACK INTO ENGLISH

Earth is flat, but rotates at high speed and makes a round illusion

INTO JAPANESE

地球は平らだが高速で回転して丸い錯覚をする

BACK INTO ENGLISH

Earth is flat but rotates at high speed and makes a round illusion

INTO JAPANESE

地球は平らだが高速で回転し、丸い錯覚をする

BACK INTO ENGLISH

Earth is flat but rotates at high speed and makes a round illusion