n.参加；参与

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？

I'd like to be excused from any further participation in the work. 我希望让我不再继续参加这项工作。

I'd like to express my thanks for your participation. 对于您的参加,我表示衷心的感谢。

His participation is not welcomed. 他的参与不受欢迎。

I look forward to your support and participation in the programme. 希望大家支持并参与这项计划。