YOU SAID:
the moth flitted across the sky
INTO JAPANESE
蛾は空を横切って飛んだ
BACK INTO ENGLISH
The moth flew across the sky
INTO JAPANESE
蛾は空を飛んだ
BACK INTO ENGLISH
The moth flew in the sky
INTO JAPANESE
蛾は空を飛んだ
BACK INTO ENGLISH
The moth flew in the sky
That didn't even make that much sense in English.