联合诉讼

例句：

1. 1. The two companies have joined forces to develop a new product.
   两家公司已经联手开发新产品。
2. 2. He joined the club because he wanted to meet more people like him.
   他加入了俱乐部，因为他想认识更多像他一样的人。
3. 3.The government has joined the negotiations with the opposition party.
   政府已经与反对派政党开始谈判。