join up

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

加入, 参加

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

:
He decided to join up with the local environmental group.
他决定加入当地的环保组织。
Many young people join up for various social causes.
许多年轻人加入各种社会事业。
2.

参军, 入伍

to join the armed forces

:
He decided to join up right after high school.
他决定高中毕业后立即参军
Many young men were encouraged to join up during the war.
战争期间,许多年轻人被鼓励参军