"Let's participate!"

Translation: Ni partoprenu!

[Jamthom8]

Parto = part and preni = take. Take part = participate. Brilliant

[Lohnesinpr]

why not Ni partoprenos! future

[noureddin95]

"Ni partoprenos" = "We will participate" -- indicative/realis mood

"Ni partoprenu" = "Let's participate" -- volitive/jussive mood

I wish it help. :)