This is part of my collection, especially the Arabian cowry is rare.

We are working on the development and import of new software.

We are focusing on the research and development of new products.

Developmental dictatorship can bring about economic growth, but there are also issues of human rights violations.

It took a long time to set up the development environment.

Minors are legally prohibited from drinking alcohol.

Michi is my best friend.

That unsolved problem keeps him awake at night.

That unsolved case keeps him awake at night.

This is completely unexperienced for me.