participation

名词 participation:

1. the act of sharing in the activities of a group
   同义词：engagement, involvement, involution
2. the condition of sharing in common with others (as fellows or partners etc.)
   同义词：involvement

1. By the way, must we guarantee in any way our participation in the tender?
   顺便问一下，我们应为参加投标做一点保证吗？
2. His participation is not welcomed.
   他的参与不受欢迎。
3. We win the game because of his participation.
   由于他的参与，我们赢了比赛。

par.tic.i.pa.tion

n.（名词）
The act of taking part or sharing in something:
参与：参与或分享某事的行为：
例句：
Teachers often encourage class participation.
教师常鼓励学生积极参与

【引伸】
partic.ipa.tional
adj.（形容词）