joined-label-definition

例句：

1. 1.They joined forces to solve the problem.
   他们联合起来解决问题。
2. 2. The two countries have been joined since 1997.
   这两个国家自1997年以来已经合并。
3. 3.After joining the team, he became more confident and effective.
   加入团队后，他变得更加自信和有效。