YOU SAID:
They run swiftly, power abound.
INTO JAPANESE
彼らは素早く走り、パワーに満ち溢れています。
BACK INTO ENGLISH
They are fast and full of power.
INTO JAPANESE
彼らは速くてパワーに溢れています。
BACK INTO ENGLISH
They are fast and full of power.
That didn't even make that much sense in English.