YOU SAID:
I steal people’s kneecaps
INTO JAPANESE
人の膝蓋骨を盗みます
BACK INTO ENGLISH
steal a person's kneecap
INTO JAPANESE
人の膝蓋骨を盗む
BACK INTO ENGLISH
steal someone's kneecap
INTO JAPANESE
(人)の膝蓋骨を盗む
BACK INTO ENGLISH
steal someone's kneecap
Come on, you can do better than that.