The tariffs have been a bone of contention between the two nations.关税问题一直是两国间争端的起因。The urban development programme has rapidly become a bone of contention.城镇发展计划已迅速成为争论的焦点。Where to spend Christmas is always a bone of contention in our family.到哪儿去度圣诞总是我们家争论的焦点。