The pineal gland, or 松果體, is a part of the brain that secretes hormones.

This new semiconductor has the potential to revolutionize the electronics industry.

This old book is written in old-style characters.

The term '異體字' refers to Chinese characters that have the same meaning but different forms.

This company is advancing the process of unification.

He is writing a thesis on fluid dynamics.

The tesseract represents a four-dimensional geometric shape.

The 正五胞體 is a simple convex polytope in four dimensions, having five vertices.

He made a model of a dodecahedron.

This regular tetrahedron is composed of equilateral triangles on all sides.