a bone of contention
US /ə ˌboʊn əv kənˈten.ʃən/
UK /ə ˌboʊn əv kənˈten.ʃən/

成語
1.
爭論的焦點, 爭執的根源
a subject or issue over which there is continuing disagreement
範例:
•
The division of assets became a bone of contention during the divorce proceedings.
資產分割在離婚訴訟中成了爭論的焦點。
•
The new parking policy has been a bone of contention among residents.
新的停車政策一直是居民們爭論的焦點。
在 Lingoland 學習這個單詞