join infinite distributive

例句：

1. 1. The two teams will join forces towin the championship.
   两队将联手赢得冠军。
2. 2.She joined the club after moving to thecity.
   搬到城市后，她加入了俱乐部。
3. 3.They need to join forces to solve thisproblem.
   他们需要联手解决这个问题。