He is an expert in astrophysics, and his research is highly valued around the world.

He is in the midst of studying for the exam.

He has completed the entry and exit procedures.

We introduced a new milking machine to the farm.

An antiprism is a part of geometry, and its shape is very unique.

He made a model of a triangular prism.

The airplane disintegrated in mid-air.

He is using a drone to take aerial photographs.

The Bank of Japan conducted exchange intervention to prevent the yen from appreciating.

This building is characterized by its vertical and horizontal design.