bone of contention

The property left by their father was a bone of contention between the brothers.

他们父亲遗产成为兄弟间吵问题。

The interpretation of this painting has long been a bone of contention among art historians.

对这幅画解释长久来一直是艺术史学家不休问题。

The channeling of E.U. funds to the Palestinian Authority to unofficial or semiofficial accounts was a bone of contention that often troubled many an honest official of the Union.

困扰许多诚实欧盟官员一个端是，是否应该将欧盟资金打到巴勒斯坦当局非官方或半官方账户。