"I especially appreciated the chance to meet with Iraqis, including a group of Iraqi women, who were both war widows and helping widows and their children, and I also participated in a historic town meeting with Iraqi citizens representing a broad cross-section of Iraqi society.

VOA: standard.2009.04.25

but yeah, I participated in things like that.

但也是类似的。

我遇到的天才们 - SpeakingMax英语口语达人

She went to college and said here's my opportunity to study the thing that I find most interesting, and that was biology, and then she went back and participated in the family business, which was of course the acting profession.

她来学校说她有机会,选择她最喜欢的专业，也就是生物,然后她回家投身于她的家族事业，也就是演戏。

麻省理工公开课 - 化学原理课程节选

I don't know. A million people have participated in this implicit.harvard.edu and you could just go online, implicit.harvard.edu and then you could do it yourself.

大约有100万人参加过,你们可以上网，自己一个人做。

耶鲁公开课 - 心理学导论课程节选