Alexander is my best friend.

Esperanto is one of the most well-known international auxiliary languages.

He is an expert in international law.

Her dress was in dazzling colors, just like a rainbow.

The International System of Units is a system of units commonly used worldwide.

He is interested in learning the international auxiliary language.

He is studying every day with the spirit of unyielding diligence in his studies.

He is majoring in moral philosophy at university.

We took a plane from Narita International Airport.

The International Phonetic Alphabet is an essential tool for linguistic research.