to participate in an activity or celebration
参与活动或庆祝 (can yu huo dong huo qing zhu)
"Everyone was invited to join in the traditional dance at the festival."
"每个人都被邀请参加节日的传统舞蹈。" (mei ge ren dou bei yao qing can jia jie ri de chuantong wu dao.)
to join or participate actively in something
to discuss a problem or disagreement to reach an understandi...
to return something to its owner, especially after checking...
to get clear responses to specific questions
to remain in control or keep updated with something
to improve yourself beyond what you thought possible