风马牛不相及: have no relevance [relationship] whatsoever with each other; be related to one another as like as an apple to an oyster [huckleberry to a persimmon]; be totally unrelated; have nothing in
Example Sentences:
1.
It is a horse of another color . we cannot mention them in the same breath 这是风马牛不相及的事，我们不能把它们相提并论。
