join up

US /dʒɔɪn ʌp/
UK /dʒɔɪn ʌp/
"join up" picture
1.

unirse, afiliarse

to become a member of an organization, club, or group

:
He decided to join up with the local environmental group.
Decidió unirse al grupo ecologista local.
Many young people join up for various social causes.
Muchos jóvenes se unen por diversas causas sociales.
2.

alistarse, ingresar al ejército

to join the armed forces

:
He decided to join up right after high school.
Decidió alistarse justo después de la escuela secundaria.
Many young men were encouraged to join up during the war.
Se animó a muchos jóvenes a alistarse durante la guerra.