YOU SAID:

There are approximately 600 – 800 million alveoli in the two lungs of a human being.

INTO JAPANESE

人間の両肺には約 6 億から 8 億個の肺胞があります。

BACK INTO ENGLISH

There are approximately 600 to 800 million alveoli in both human lungs.

INTO JAPANESE

人間の両方の肺には約 6 億から 8 億個の肺胞があります。

BACK INTO ENGLISH

There are approximately 600 to 800 million alveoli in both human lungs.