take part in, participate in, join, enter, attend 都有参加的意思,但用法有差异
take part in = participte in 有主动、积极参与的意味在
ex：He want to take part in the street protest.
join跟enter 则是参加团体活动、或已经成立的组织
ex：I joined the army as a part of citizen duty.
attend 则有静态、被动参与的意味在 .像是出席会议或是学术活动
ex：I have to attend the seminar tomorrow.
总之记得
take part in - an activity
join - a group
attend - an occasion
希望有帮到你