实用口语：apples and oranges 差异巨大

Apples and oranges 表示两个人或两个事物之间的差异非常大，无法进行公平的比较

A: Which do you think is more important, math or history?  你认为数学和历史哪个更重要？

B: That's like comparing apples and oranges. Math and history have their own value and purposes, and they can't be directly compared. 这就像比较苹果和橙子，数学和历史都有各自的价值和用途，无法直接进行比较。

A: They are so different; they can't get along! 他们两个是如此不同，无法相处!

B: Yes, they are like apples and oranges. The differences between them are too great, and it's hard to find common ground. 是的，他们就像苹果和橙子一样，彼此之间的差异太大了，很难找到共同点.