YOU SAID:

What goes up must come down, unless it goes up very very fast and escapes the gravitational pull of the Earth.

INTO JAPANESE

よほどの速度で上昇して地球の重力から逃れない限り、上昇したものは必ず下降します。

BACK INTO ENGLISH

Anything that rises will always fall unless it rises fast enough to escape Earth's gravity.

INTO JAPANESE

上昇するものは、地球の重力から逃れるのに十分な速度で上昇しない限り、常に落下します。

BACK INTO ENGLISH

Anything that rises will always fall unless it rises fast enough to escape Earth's gravity.