这两个环保组织决定联合起来，倡导更强有力的气候政策。

The two environmental organizations decided to ___join ___forces to advocate for stronger climate policies.

她与她的嫂子联手开了这家餐厅。

She ___joined ___forces with her sister-in-law to set up the restaurant.

互为竞争对手的科技公司联手开发了一款革命性的新产品。

The rival tech companies ___joined ___forces to develop a revolutionary new product.