He was struggling to understand the concept of a hypercube.

Sex chromosomes play an important role in determining the sex of an organism.

Let's solve this problem with unity in diversity.

This old book is written in old-style characters.

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

He is good at reading Simplified Chinese.

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

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.