Compounds containing a propargyl group are often used in organic chemistry research.

The allyl group plays an important role in organic chemistry.

Kihan is my best friend.

The Labor Standards Inspection Office (Rōdō Kijun Kantokusho), or 'Rōki' for short, plays a crucial role in protecting the rights of workers.

This organism has a very complex anlage in the early stages of development.

She felt the pathos of things when she saw the cherry blossoms falling.

What is this object?

Zoo staff must clean up the animals' excrement every day.

I am thinking about what to make her birthday gift.

This animal is a protected species, so you must never touch it.