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

He is a world-famous philosopher.

He was able to spell the word correctly.

This train is a direct service to Ye.

I commute by railway every day.

Commuting by subway is the most convenient.

He is majoring in philosophy.

The procedures to obtain a new visa are complicated.

He is a famous philosopher.

My father works at an ironworks.