link up into a single stretch

例句：

1. 1. They linked up with a local charity to help the homeless.
   他们与一个当地的慈善机构合作，帮助无家可归者。
2. 2. The two companies have linked up to develop a new product line.
   这两家企业已经联合起来开发一个新的产品系列。
3. 3. The team worked diligently to link up all the pieces of information.
   团队努力工作，将所有的信息片段连接起来。