Comparing their two businesses is like comparing apples and oranges; they operate in completely different markets.

比较他们的两家公司就像比较苹果和橘子；它们在完全不同的市场中运作。

You can't compare the cost of a luxury car to a budget car; it's apples and oranges.

你不能把豪车的成本和经济型车的成本相比较；这是风马牛不相及。