YOU SAID:
As the rat sped down the ramp, twitching its whiskers along the way, it smelled the aroma of freshly strewn garbage.
INTO JAPANESE
ラットは、傾斜路を走った、途中で、そのひげをぴくぴくにおいたて散らばったゴミの香り。
BACK INTO ENGLISH
Rat's scent halfway down the ramp, oitate piku-Pikus into their beards and scattered trash.
You've done this before, haven't you.