参与了

participated in

→ 参与
phrase Rare #20,013
participated in 了 indicates that the participation took place or is being viewed as completed.
CH: 她参与了这个项目。
EN: She participated in this project.

他否认参与了犯罪。

He denied being involved in the crime.

今年参与了就有力度太大了

I took part this year, but it was a bit too intense.

— Hi, Mom (2021)

你参与了吗?

Did you participate?

— 从海底出击 (1981)

“这里的这两个人也参与了同一场阴谋;他们该受同样的惩罚。”

These two people here were also involved in the same conspiracy; they should receive the same punishment.

大家既然参与了,便要全力以赴

Since everyone has chosen to take part, they should give it their all.

— 大逃杀 (2000)