An international auxiliary language is a language used for communication beyond countries and cultures.

A special event was held to celebrate his 100th birthday anniversary.

The chemistry class is very difficult.

A regular polyhedron is a polyhedron where all faces are the same shape and all vertices are the same shape.

This dried boiled rice lasts very long, so it's ideal as a stockpile food for disasters.

Krypton is a type of noble gas.

She has a collection of crystals.

He was working as a jailer.

He is learning Sanskrit.

I found a squirrel in the park.