Compared with the long-standing friendship between the two countries, their boundary dispute is only an issue of a temporary and limited nature.

两国之间的边界争论，比起两国的悠久友谊来说，是一个暂时性和局部性的问题。

《新英汉大辞典》

The answer: Experts say these rules will be incorporated into any new regime, because they tackle a long-standing issue.

WSJ: Tax Report: Avoiding Estate-Tax Traps

Funding has been a long-standing issue at OSHA and state-run plans.

WSJ: House Bill Would Boost Federal Authority Over Workplace Safety

The recent changes are the latest effort to address a long-standing estate-tax issue for married couples.

WSJ: Tax Report: Avoiding Estate-Tax Traps