This mug has high heat retention, so the coffee stays hot for a long time.

Formaldehyde is a compound often used in organic chemistry.

I remember the first time I went to a love hotel with him.

Okuninushi is an important god in Japanese Shinto.

She is known as a skeleton woman.

You can see Ursa Major all year round in the northern hemisphere.

I use a set square to draw shapes.

In chemistry class, I learned about acid anhydride.

In chemistry class, I learned about acidic oxides.

Lower fatty acids play an important role in the human body.