I worked for a month to complete this project.

This is a simple instruction manual.

It's important to enjoy cooking by fully using your five senses.

His five sense organs are very sharp.

My sense organ recognized his voice immediately.

We need to think about that issue from various viewpoints.

These two parts have interchangeability.

These two software are completely interchangeable.

He finds it difficult to advance the new project due to bureaucracy.

The astronomer conducted an observation of the night sky.