apples and oranges不是蘋果和橘子，那它表示？
之前我們寫過rain cats and dogs表示“傾盆大雨”，cats and dogs並不僅僅表示貓和狗，今天要寫的apples and oranges也是如此，並非蘋果和橘子這麼簡單。
apples and oranges是一個常用習語，表示“兩者天差地別，無法比較；不能混爲一談”，它在美式英語中更爲常見。
The idiom, comparing apples and oranges, refers to the apparent differences between items which are popularly thought to be incomparable or incommensurable, such as apples and oranges.
例如：
You can't compare them. They are apples and oranges.
你無法比較它們，它們完全不能混爲一談。
你知道這個用法嗎？
