这两个公司建立了战略联盟以共同开发新技术。

The two companies formed a strategic ___alliance to develop new technologies together.

这两个国家因为共同的环保目标而结成了联盟。

The two countries formed an ___alliance based on their shared environmental goals.

这两个政党结成了联盟，以便在大选中获得更多席位。

The two political parties formed an ___alliance to gain more seats in the general election.