join up

英 [dʒɔɪn ʌp]

美 [dʒɔɪn ʌp]

参军; 入伍; （与…）联合; （与…）会合; （与…）组成联盟

柯林斯词典

PHRASAL VERB 参军；入伍
If someonejoins up, they become a member of the army, the navy, or the air force.
1. When hostilities broke out he returned to England and joined up.
  战事爆发之后，他回到英格兰参军了。
PHR-V-RECIP （与…）联合；（与…）会合；（与…）组成联盟
If one person or organizationjoins up withanother, they start doing something together.
1. Hawkins joined up with Mick in Malaga, and the two went touring around the countryside...
  霍金斯在马拉加和米克会合，然后两个人到乡间游玩去了。
2. Councils are joining up with their European counterparts...
  这些委员会将与欧洲的委员会结成联盟。
3. They began to join up in communities.
  他们开始结成团体。