Also, be careful of regional idioms.

还有，小心地域性习语。

That was my question was how regional are these ingredients?

我问题是这材地域性有多？

And those are so phenomenally regional.

这都有非常地域性。

Research can be territorial — new communities emerge sometimes because of disagreements in fields.

研究可以是地域性——有时由于领域内分歧会出现新社区。

Regional differences exist between countries, and some issues are local rather than global, not necessarily requiring global cooperation.

不同国家存在地区差异，有问题是地域性而非全球性，不一定需要全球合作。

But be careful when you use idioms because if you're using an idiom, that's extremely regional and specific to a certain location.

讲习语时要留意，因为如果你讲习语，这是非常地域性，而且特定于某个地点。