independent trade union

例句：

1. 1.The independent trade union is working on a new policy to improve the working conditions.
   独立工会正在制定一项新的政策来改善工作条件。
2. 2.The union has been fighting for workers' rights for many years.
   这个工会已经为工人权利奋斗了多年。
3. 3. The union is trying to negotiate a better contract with the company.
   工会正试图与公司谈判一份更好的合同。