N-VAR
(常包含特殊儀式的)入會，加入
Someone's initiation into a particular group is the act or process by which they officially become a member, often involving special ceremonies.
例句
After initiation, the youths started to interact with the older members...
入會儀式后,這些小伙子與老成員開始互動。
This was my initiation into the peace movement.
這是我初次參加和平運動。