apples 和 oranges 放在一起却不是“苹果和橙子”，真实含义是“风马牛不相及，截然不同”。

【例句】
You can't compare who works harder, me or you; I am a teacher and you are a fisherman, and that is like comparing apples and oranges.
我和你谁工作更努力不能拿来比较，我是老师，而你是新生，根本风马牛不相及。

Germany and Brazil are two nations that dominate the World Cup, but their footballing styles are like apples and oranges.
德国和巴西在世界杯上的地位举足轻重，但他们的比赛风格却是截然不同。