They belong to complete different fields.

它们分属完全不同的领域。

On the contrary. I have some reservations on this point. I do not think inernational Taxation has anything to do with the political relations. They belong to complete different fields. How can these two be mixed up?

我和你恰恰相反。我对那一点有保留意见。我不认为国际税收和国际政治之间有什么联系。它们分属完全不同的领域，两者怎么能够相提并论呢？