YOU SAID:
Put apple into fridge to cool it down
INTO JAPANESE
リンゴを冷蔵庫に入れて冷やす
BACK INTO ENGLISH
Put the apples in the fridge to cool
INTO JAPANESE
りんごを冷蔵庫に入れて冷やす
BACK INTO ENGLISH
Put the apples in the fridge to cool
That didn't even make that much sense in English.