For months dentists and the health department have been at loggerheads over fees. [+ over]

数月来，牙医和卫生部门为费用问题针锋相对。

France was left isolated and at loggerheads with other EU member countries over its refusal to fall into line with demands to cut state borrowing. [+ with]

法国与其他欧盟成员国要求削减国家借贷的意见相左，因而受到它们的孤立，与它们闹得不可开交。