apples and oranges
完全不同的事物，无法比较
口语·表示两者完全不同无法比较
英文释义
comparing or discussing things that are completely different and cannot be compared
例句
Comparing her poetry to his is like apples and oranges; they're totally different styles.
典故来源
源自日常比喻，苹果和橙子外形相似但本质不同，用于强调不可比性。