bone of contention adj. 争论的问题(争论的原因) 例句与用法: The border has always been a bone of contention between these two countries. 这两国之间的边界问题历来是争议的焦点。 词形变化: 动词过去式: boned | 动词过去分词: boned | 动词现在分词: boning | 动词第三人称单数: bones | 详细释义: ph. 争论的焦点