私相授受【英】

arbitrarily include...under the trusteeship

译文来源

http://english.gov.cn/archive/white_paper/2014/08/23/content_281474983043212.htm

例句

1. 但20世纪50年代，美国擅自将钓鱼岛纳入其托管范围，70年代美国将钓鱼岛“施政权”“归还”日本。美日对钓鱼岛进行私相授受，严重侵犯了中国的领土主权，是非法的、无效的，没有也不能改变钓鱼岛属于中国的事实。——《钓鱼岛是中国的固有领土》

1. However, the United States arbitrarily included Diaoyu Dao under its trusteeship in the 1950s and “returned” the “power of administration” over Diaoyu Dao to Japan in the 1970s. —Quoted from Diaoyu Dao, an Inherent Territory of China