współpracy in English:

Tomorrow, his collaborative method will be crowned with success.

The presentation was a collaborative effort.

You can achieve more in a collaborative working environment.

This has been a collaborative venture involving several organizations.

Obviously, this cannot be the work of one person. This is why Tatoeba is collaborative.

But that's not the whole picture. Tatoeba is not just an open, collaborative, multilingual dictionary of sentences. It's part of an ecosystem that we want to build.