YOU SAID:
Air is smooth but raspy
INTO JAPANESE
空気しますが、スムーズに耳ざわりです
BACK INTO ENGLISH
The air is smooth rough
INTO JAPANESE
空気が滑らかなラフ
BACK INTO ENGLISH
Rough and smooth air
INTO JAPANESE
荒く、滑らかな空気
BACK INTO ENGLISH
Rough and smooth air
That didn't even make that much sense in English.