N-VAR
(常包含特殊仪式的)入会，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...
入会仪式后,这些小伙子与老成员开始互动。
This was my initiation into the peace movement.
这是我初次参加和平运动。