join up
US /dʒɔɪn ʌp/
UK /dʒɔɪn ʌp/
1.
加入, 參加
to become a member of an organization, club, or group
:
•
He decided to join up with the local environmental group.
他決定加入當地的環保組織。
•
Many young people join up for various social causes.
許多年輕人加入各種社會事業。
2.
參軍, 入伍
to join the armed forces
:
•
He decided to join up right after high school.
他決定高中畢業後立即參軍。
•
Many young men were encouraged to join up during the war.
戰爭期間，許多年輕人被鼓勵參軍。