An user Spanish
says…

Son
Auxiliary
  los que
  se
Pronoun
  presentan
Verb
  junto
Adjective
  con
Adposition
  los
Determiner
  adultos
Noun
  y
Coordinating conjunction
  colaboran
Verb
  junto a
  ellos
Pronoun
.

They are the ones who present themselves together with adults and collaborate with them.
Words and sentences
New
los que

masculine plural of el que

New
junto

New
con

  1. with
  2. on

New
los

New
adultos

New
colaboran

third-person plural present indicative of colaborar

New
junto a

next to, alongside

New
ellos

plural of él (“they, them”)

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