official swearing-in正式宣誓
Swearing-In Ceremony就职仪式;一个人公共宣布自己将做某事并成为公共职位的人
Inaugural Swearing-In Ceremony宣誓就职典礼
N-SING（单数型名词） The swearing-in at the beginning of a trial or official appointment is the act of making formal promises to fulfil the duties it involves. 宣誓作证; 宣誓就职