bone of contention片语KK [bon ʌv kənˋtɛnʃən] /boʊn ʌv kənˈtɛnʃən/发音片语1争论的焦点、争端的根源、症结The parking lot has been a bone of contention between the neighbors for years.那个停车场多年来一直是邻居之间争论的焦点。用这个字练口说→