这证明，我们双方的合作在加强。恳求翻译！！

It is proved that our mutual collaboration is getting strengthened.

This has been a testament of the enhancement of our collaboration.
或
This has been a testament of the reinforcement of our collaboration.

our collaboration 也可用 the cooperation between us.

It evinces that our cooperation
are strengthening.

It prove that the cooperation between us is still strengthening。