YOU SAID:

you like your arm in one piece

INTO JAPANESE

あなたは一枚で腕が好きです

BACK INTO ENGLISH

You like your arms in one piece

INTO JAPANESE

腕が一つになっているのが好き

BACK INTO ENGLISH

I like having one arm

INTO JAPANESE

片方の腕が好き

BACK INTO ENGLISH

I like one arm

INTO JAPANESE

片腕が好き

BACK INTO ENGLISH

I like one arm