He is an expert in tidology, studying the fluctuations of the sea's tides.

The calculation of the antiderivative is a fundamental part of calculus.

I learned how to calculate definite integrals in math class.

This volcanic rock contains a lot of olivine.

This dress is made of muslin.

Today's dessert is fios de ovos.

This dried whitebait is perfect for enhancing the flavor of dishes.

He found a regular dodecahedron-shaped spicy cod roe.

He made a model of a regular icosahedron.

I tried eating fukuro-men for the first time.