The 16-cell is one of the convex regular polytopes in four dimensions.

This regular dodecahedron is a geometric shape with perfect symmetry.

This solid is called a regular icosahedron, and it is made up of 20 equilateral triangles.

Him calling me lazy is truly a case of the pot calling the kettle black.

He chose a stable job, saying 'a bird in the hand is worth two in the bush.'

My brother is a short sleeper, he only sleeps 4 hours every night.

Demography is an important tool for understanding various aspects of society.

His efforts were like a mantis trying to stop a chariot, he couldn't achieve any results.

He is the champion of the stone, paper, scissors game.

The single transferable vote is an important means to ensure the fairness of elections.