YOU SAID:
In the upper atmosphere, strong, fast winds called jet streams occur at altitudes of 8 to 15 kilometers (5 to 9 miles) above the Earth.
INTO JAPANESE
上層大気では、地球から 8 ~ 15 キロメートル (5 ~ 9 マイル) の高度で、ジェット気流と呼ばれる強くて速い風が発生します。
BACK INTO ENGLISH
In the upper atmosphere, at altitudes of 8 to 15 kilometers (5 to 9 miles) above Earth, strong and fast winds called jet streams form.
INTO JAPANESE
上層大気では、地球から 8 ~ 15 km (5 ~ 9 マイル) の高度で、ジェット気流と呼ばれる強くて速い風が形成されます。
BACK INTO ENGLISH
In the upper atmosphere, at altitudes of 8 to 15 kilometers (5 to 9 miles) above Earth, strong and fast winds called jet streams form.
You've done this before, haven't you.