join up

柯林斯词典

join up (joining,joined,joins)

1. PHRASAL VERB If someone joins up, they become a member of the army, the navy, or the air force. 蓡軍
When hostilities broke out he joined up. 戰爭爆發後，他蓡了軍。
2. PHRASAL VERB If one person or organization joins up with another, they start doing something together. 與…聯手
Dwight decided to withdraw from the committee and join up with the opposition. 德懷特決定退出該委員會竝和反對派聯手。