bone of contention片語KK [bon ʌv kənˋtɛnʃən] /boʊn ʌv kənˈtɛnʃən/發音片語1爭論的焦點、爭端的根源、癥結The parking lot has been a bone of contention between the neighbors for years.那個停車場多年來一直是鄰居之間爭論的焦點。