He is interested in learning the international language.

He returned safely and healthily from a long trip.

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.

He is a perfectionist, but we must not forget that even monkeys fall from trees.

He always does perfect work, but he made a mistake today. Well, even monkeys fall from trees.

I am planning to go to Jiamusi next week.

I heard the cry of the eagle owl in the night forest.